An 11-year-old boy from Croatia suffered from bronchial asthma since he was six years old. Six months before hospitalization, the course of the disease worsened significantly - asthma attacks began to be difficult to control with previously prescribed medications. Then the patient began to complain of poor appetite and frequent headaches, and shortness of breath and cyanosis began to increase. In connection with this, the boy was admitted to the therapeutic department of the hospital.
The young patient complained of dyspnea on exertion and several exacerbations of asthma, one of which resulted in hospitalization in the previous month. During exacerbations, the child was prescribed systemic corticosteroids with a gradual reduction in dosage, however, without reducing chronic hypoxia and other symptoms. At the time of admission the patient was receiving:
- inhalation of an adrenergic agonist and glucocorticosteroid (fluticasone and salmeterol 250 mcg / 50 mcg twice a day);
- bronchodilator montelukast - 5 mg once a day;
- inhalation of the adrenergic agonist salbutamol as needed (at the time of admission - four times a day).
Since childhood, the boy suffered from atopic dermatitis, in infancy he was allergic to cow's milk, and from the age of three he suffered from nosebleeds. At age six, the child was diagnosed with asthma due to recurrent episodes of wheezing and a positive exercise bronchoprovocation test. A skin allergy test showed sensitivity to house dust mites and grass pollen. After the patient was diagnosed with asthma, he was followed regularly by a pediatric pulmonologist. For the last two years, the disease has been asymptomatic - without prophylaxis or prescription of potent drugs.
When the boy was brought to the hospital, his general condition was characterized as “moderate”: shortness of breath, skin and visible mucous membranes pale to the point of cyanosis, hypoxia at rest (blood oxygen level (SaO2) 92%, normal ≥ 95%) . In addition, intermittent sounds were heard over the left lung, and vesicular breathing was weakened on the right. Upon examination, doctors discovered two telangiectasias on the left cheek and discrete telangiectasias on the back. Ultrasound examination of the heart revealed no pathology and no pulmonary hypertension.
Telangiectasia is an expansion of small vessels of the skin of a non-inflammatory nature, manifested by spider veins or spider veins.
Spirometry (a special study of the function of the respiratory system) showed a vital capacity of the lungs (VC) of 2.65 l (79% of normal), forced expiratory volume in 1 second (FEV1) of 2.61 l (97% of normal), FEV1/VC ratio = 95% (norm). After inhalation of the bronchodilator, FEV1 and vital capacity increased by 5%. However, with bronchial asthma the increase in this case is more than 12%.
Spirometry indicators uncharacteristic for asthma forced doctors to intensify the diagnostic search. The boy was prescribed a bronchoscopy. It showed compression of the left bronchus in the lingular segment of the lung, and the radiograph showed a homogeneous mass of soft tissue measuring 20 × 30 mm in the area of this bronchus (Fig. 1). Tumor growth could not be ruled out. Fortunately, a computed tomography (CT) scan did not reveal a tumor, but a 35-mm arteriovenous malformation (AVM) in the area of the compressed bronchus and a small AVM in the apex of the right lung (Fig. 2). The AVM on the left had one feeding artery and a large aneurysm. The right AVM received its supply from two arteries (Fig. 3, 4).
Arteriovenous malformation (AVM) is an abnormal connection between veins and arteries, usually congenital. Malformations can appear in any organ, but are most dangerous in the cerebrospinal zone.
Figure 1. Chest X-ray showed a 20 × 30 mm homogeneous soft tissue mass in the lingular segment of the left lung, adjacent to the heart shadow.
Figure 2. Three-dimensional computed tomography angiography showed a 35-mm vascular malformation in the anterior left upper lobe with one feeding artery (a branch of the pulmonary artery) and one draining vein
Figure 3. A. Arteriovenous malformation and aneurysm of the segmental branch of the pulmonary artery. B. Condition after embolization of the segmental left branch of the pulmonary artery with occlusion of the arteriovenous anomaly.
Figure 4. A. Arteriovenous malformation of the right apex with two feeding arteries. B. Condition after embolism of one of the AVM arteries. C. Condition after embolism of the second artery of the AVM.
During hospitalization, the boy underwent a genetic analysis, which revealed a mutation in the gene for the transmembrane protein endoglin, which is typical for Randu-Osler syndrome.
Rendu-Osler disease (Randu-Osler-Weber), Osler syndrome, familial hemorrhagic telangiectasia, is a hereditary disease based on the inferiority of the vascular endothelium, resulting in the formation of multiple angiomas and telangiectasia (types of vascular abnormalities), which can bleed. The disease is named after the doctors who described it in the late 19th and early 20th centuries. Rendu-Osler disease is transmitted in an autosomal dominant manner; occurs in one in 5,000 people.
To treat this case of Randu-Osler disease, doctors decided to embolize (selectively occlude - editor's note) the malformations in the lungs using stainless steel coils (Fig. 5). The coils were inserted using a catheter through the femoral artery. The diameter of the spirals was equal to or 10% greater than the diameter of the arteries feeding the malformations (Fig. 3, 4). After surgery, blood flow through the AVM stopped (Fig. 6). Pulse oximetry showed an increase in peripheral blood oxygen saturation from 92% to 97% directly in air.
The painful pallor disappeared, the boy began to tolerate stress better. Symptoms of suffocation and respiratory failure did not appear during the entire observation period (six months after the procedure). In addition, doctors, using MRI of the brain and cervical spine, were convinced that there were no life-threatening cerebrospinal AVMs. An in-depth medical history revealed a positive family history of Randu-Osler disease: a cousin of the patient's father was diagnosed with an AVM in the brain.
Figure 5. Chest X-ray with steel coils after embolization of pulmonary arteriovenous malformations in the right and left lung.
Figure 6. Angiogram after pulmonary embolization of both arteriovenous malformations
1.General information
To the synonymous diagnoses listed in the title, you can add several more names that are often used to designate this disease, for example, Osler syndrome, Randu-Osler-Weber disease, hemorrhagic telangiectasia, etc.). All of them point to the most common type of hereditary vascular pathology: its essence lies in small-focal abnormal stretching and thinning of the capillary walls, which leads to the formation of multiple telangiectasia (vascular “stars”, dots, “meshes”, etc.) with a tendency to bleeding .
The epidemiological picture is characterized by extreme unevenness and territorial dependence. Thus, Randu-Osler disease is found in every two hundred of the inhabitants of the Netherlands Antilles, while in other regions of the world the incidence may not exceed 1:100,000.
2. Reasons
To date, questions remain regarding pathogenesis. According to the most reasoned and generally accepted point of view, the characteristic clinical picture arises due to the abnormal, irregular structure of the tissues from which the walls of microvessels are formed at the stage of intrauterine development: they have practically no elastic muscle fibers, and the shell of the endothelial wall is connective tissue. With this composition, the vascular wall is fragile, vulnerable and unstable to stretching; it easily forms aneurysms and ruptures, which leads to bleeding.
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3. Symptoms and diagnosis
Despite the fact that the disease is genetically determined, it usually begins to manifest itself only after 6-8 years of life. The first visible telangiectatic lesions are usually localized on the lips, gums, wings of the nose, cheeks, and earlobes. Over the years, telangiectasias become more numerous, they appear in new areas and, in addition, their morphology changes: from small red dots to “cobwebs” and noticeably protruding bright red nodules. The hemorrhagic tendency also worsens with age.
A typical and one of the first symptoms of Randu-Osler disease is nosebleeds. Their intensity varies in different cases: from relatively short and meager to persistent and very long. In the history of medicine, cases of death from blood loss due to hemorrhagic telangiectasia have been recorded.
As vascular-wall incompetence progresses, telangiectatic foci can form not only on the mucous membranes and skin, but also on internal organs (brain, gastrointestinal tract, lungs, kidneys, etc.). Accordingly, even minor aneurysms or bleeding in this case become very dangerous: there is a high risk of developing severe anemia and fatal cardiovascular failure.
Diagnosis is based on studying the medical history (one of the key signs is frequent persistent bleeding) and family history (hereditary factor), as well as identifying characteristic telangiectasias. As a rule, they are visualized on the skin or mucous membranes during examination and leave no doubt, however, the likelihood of latent internal bleeding creates indications for prescribing endoscopic examinations. A general clinical blood test and a coagulogram are also required.
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Treatment of telangiectasia at the Schneider Clinic in Israel
There is no cure for telangiectasia, but treatment can help avoid serious complications caused by abnormal blood vessels. What kind of treatment the patient needs depends on which organs and systems are affected by telangiectasia.
If the disease affects the upper respiratory tract (nose and nasopharynx), the patient may suffer from frequent nosebleeds. Moreover, sometimes the bleeding can be very heavy. The reaction can occur due to a variety of reasons, but can be eliminated in a simple way. It is enough to regularly humidify the air, use moisturizing aerosols or nasal drops. If the bleeding is severe, doctors recommend laser coagulation therapy and hormonal therapy. People with severe variants of the disease may need a procedure called septal dermoplasty.
If there are reactions from the skin, doctors also select treatment, which depends on the specific symptoms. Quite often, doctors suggest starting treatment only in cases where the disease causes discomfort to the patient. In other cases, doctors suggest choosing observation tactics. In difficult cases, laser therapy is prescribed at the Schneider Clinic in Israel.
In cases where telangiectasia affects the functioning of the gastrointestinal tract, serious intervention is required. Bleeding in the stomach or intestines is difficult to treat due to the large number of lesions that can occur in the area. Mandatory treatment options include laser therapy, hormonal therapy, or a combination of both.
In cases where the disease affects the brain, doctors select symptomatic treatment. This could be surgery, embolization, or radiosurgery.
4.Treatment
The primary goals are to prevent dangerous hemorrhages and relieve anemia; in some cases, blood transfusions are prescribed for this purpose. For a long time, nasal tamponade was considered the therapeutic standard for Randu-Osler disease, but now more and more specialists are abandoning this method, finding a lot of shortcomings in it and low efficiency. Today, among the therapeutic agents used are irrigation with a solution of aminocaproic acid, various coagulation techniques (cryo-, electro-, laser) and artificial embolization of the most problematic arteries. The presence of large aneurysms often forces them to resort to surgical removal.
Patients with hereditary hemorrhagic telangiectasia have to follow a special diet and take all precautions to avoid injury to bleeding and potentially dangerous lesions.
Intestinal angiodysplasia is the least studied intestinal disease, manifested by bleeding. This term combines a number of diseases that are based on the pathological development of blood vessels in different parts of the intestine. Possessing growth potential, angiodysplasia can turn into clusters of vessels or large vascular tumors such as cavernous angiomas at any period of life.
Histological examination of the surgical material makes it possible to detect conglomerates of thin-walled dilated veins filled with blood in the submucosal layer of the intestine, and multi-chamber cavernous vascular conglomerates in the subserous layer. Phleboliths are detected in the lumen of single dilated veins. Morphologically, cavernous, capillary and mixed forms of angiodysplasia are distinguished.
The occurrence of angiodysplasia is the result of a complex violation of embryogenesis of the vascular system. Injuries, infections, and hormonal disorders are secondary morphogenetic factors that contribute to their development during the intrauterine life of the fetus. The histogenesis of angiodysplasia is based on the excessive proliferation of endothelial cells while maintaining their main function - the lining of vascular tubes and cavities.
In accordance with the data of the State Research Center of Coloproctology (1995), three types of vascular lesions are distinguished [1]:
- Type I is a congenital form of angiodysplasia (hemangioma, or vascular hamartoma).
- Type II – acquired form (vascular ectasia).
- Type III – hereditary telangiectasia (Randu-Weber-Osler disease).
Congenital intestinal angiodysplasia is a rare disease [1, 3]. According to world literature, a little more than 500 cases of this pathology, confirmed histologically, are known. The age at which intestinal bleeding begins, its type, frequency, severity depend on the size, quantity and extent of vascular damage in the intestine [2, 4]. Most often, the first episodes of intestinal bleeding occur in childhood. However, isolated cases of manifestation of this disease at the age of 50–60 years have been described. The main clinical manifestation of intestinal angiodysplasia (up to 85% of cases) is frequently recurring painless intestinal bleeding at the time of defecation with a tendency to intensify in each subsequent case. Pain in the lumbar region, sacral region and lower extremities is also characteristic. Due to damage to the deep muscle layers of the intestinal wall, pain in the rectum may occur. In 10–15% of cases, intestinal bleeding with angiodysplasia is combined with complete or partial intestinal obstruction, caused either by obstruction of the intestinal lumen by conglomerates of affected vessels, or by intussusception [2, 11].
By location, the pathological process can be localized only in the large or small intestine or in the small and large intestine simultaneously. Very often, such vascular changes can be found on the skin in the form of hemangiomas of various sizes, but there are cases where there is no damage to the skin. The generalized form of cavernous hemangiomatosis belongs to the category of a rare pathology, and the combined lesion of the left half of the colon, rectum, left gluteal region with angiomatosis of the left lower limb (thigh, leg, foot), scrotum, penis - to the category of unique (Klippel syndrome - Trinone) [1, 3].
Impaired hemostasis and increased bleeding in this pathology are caused by platelet deficiency and a decrease in the level of serum fibrinogen [6]. A decrease in the number of circulating platelets may be the result of their increased destruction or pronounced aggregation in the vessels of the intestinal area affected by angiodysplasia. In addition, local coagulation in abnormal vessels causes fragmentation of red blood cells and can lead to microangiopathic hemolytic anemia with a large associated area of damage. At the same time, a decrease in the serum concentrations of coagulation factors V and VIII, responsible for the formation of thromboplastin, as well as fibrin, is often accompanied by increased fibrinolytic activity, which in turn can give rise to the development of consumption coagulopathy (disseminated intravascular coagulation - DIC syndrome) [ 7]. Daily blood loss is one of the criteria when developing indications for surgical treatment [5, 7]. If it exceeds 500 ml, it is an absolute indication for surgical intervention [1].
The acquired form of angioectasia is characterized by localization of lesions in the cecum and ascending colon. The causative factor in the development of this pathology is the adhesive process in the pelvis as a consequence of a previous inflammatory process or surgery on the pelvic organs [5, 9].
Rendu-Weber-Osler disease is a familial hereditary telangiectasia (hereditary hemorrhagic telangiectasia, or hemorrhagic angiomatosis), refers to hereditary diseases and is characterized by local dilation of small vessels, including venules and capillaries, as a result of their structural inferiority [5]. The disease manifests itself as hemorrhages, but coagulation and platelet hemostasis is not impaired.
This pathology was first described by HG Sutton (1864), and subsequently the information was supplemented by HJ Rendu (1896), W. Osler (1901) and FP Weber (1907). The etiology and pathogenesis of the disease have not been sufficiently studied; there are indications that the disease is transmitted in an autosomal dominant manner. Most patients have a heterozygous form; the homozygous variant is extremely rare. There are indications that local vasodilation occurs as a result of hereditary inferiority of the mesenchyme and disturbances in serotonin metabolism, but other researchers believe that telangiectasia are vessels newly formed from the remains of embryonic tissue. The generalized form of the disease is characterized by the location of telangiectasias on the mucous and serous membranes, skin, internal organs (lungs, liver, spleen, kidneys), and bones. Histological examination reveals sinus-shaped dilations of irregularly shaped vessels, the thinned walls of which are formed by endothelial cells and loose connective tissue.
The clinical picture is dominated by frequent profuse nosebleeds not associated with external causes, observed in 80% of patients. Less common are bleeding from the gastrointestinal tract, lungs, kidneys, urinary tract, hemorrhages in the brain, meninges, and retina. Telangiectasia can be detected in patients of any age, but most clearly manifests itself at the age of 40–50 years. They look like small (1–3 mm) flat, non-pulsating purple-violet formations that turn pale when pressed, often bleeding with minor mechanical damage. Telangiectasia can be localized on the mucous membrane of the nose, lips, gums, tongue, cheeks, on the skin of the scalp, face (especially on the wings of the nose and earlobes), limbs, trunk, as well as the conjunctiva and under the nails. Hypochromic microcytic iron deficiency anemia is characteristic, and after heavy blood loss - hypoplasia of erythroid elements of the bone marrow, reticulo- and thrombocytosis. Tests reflecting the state of coagulation and platelet hemostasis were not changed.
The disease is often combined with other vascular anomalies (aneurysms and angiomas in the lungs), leading to the formation of pulmonary arteriovenous anastomoses, which are radiologically detected in 15% of patients and their family members. The uniqueness of the clinical picture is the combination of symptoms of blood loss (anemia) and hypoxemia (cyanosis) due to the mixing of arterial and venous blood. When hypoxemia predominates, secondary erythrocytosis often develops. Cases have been described in which the disease was combined with arteriovenous anastomoses in the brain, retina, as well as with aneurysms of the hepatic and splenic arteries and aorta. Hepatomegaly with signs of liver cirrhosis (Osler cirrhosis) is detected in patients with extensive hemangiomatous lesions of the hepatic vessels.
Differential diagnosis of the above-described forms of intestinal lesions is carried out with inflammatory bowel diseases (ulcerative colitis, Crohn's disease), colon cancer, adenomatous polyps of the colon, and specific intestinal lesions.
We present data from our own observations of a patient with congenital intestinal angiodysplasia and a patient with Randu-Weber-Osler disease.
Patient O., 18 years old, was admitted to the gastroenterology department of MONIKI on 04/03/02 with complaints of increased bowel movements up to 5–7 times a day (daily volume up to 400 ml) mixed with blood and mucus, pressing pain in the lower abdomen, more pronounced in the right ileal region, worse before defecation, weakness, loss of appetite, rise in body temperature to subfebrile levels in the evening, weight loss of 17 kg over the past 2 months.
He became acutely ill on January 26, 2002, when, for no apparent reason, bowel movements became more frequent up to 6 times a day. I did not go to the doctors, I took chloramphenicol with furazolidone on my own for seven days. However, the patient's condition continued to deteriorate: blood appeared in the stool, and low-grade fever appeared in the evening. I contacted a therapist at my place of residence. To exclude the infectious nature of the disease, he was sent to the infectious diseases department of the district hospital, where the infectious etiology was rejected. With a diagnosis of “nonspecific ulcerative colitis,” on 02/14/02 the patient was transferred to the therapeutic department of the district hospital, where on 03/01/02 he underwent a colonoscopy (examination was carried out only up to the splenic angle): “The mucous membrane is pale, atrophic, the vessels are injected. Against the background of a pale mucous membrane, shallow ulcerative defects (single and in the form of clusters of 2-3-4), covered with fibrin, are found throughout the sigmoid colon and descending colon. Moderate hyperemia of the rectal mucosa.” The final diagnosis is “ulcerative colitis,” although the described changes in the mucous membrane of the colon are not entirely characteristic of this disease.
Treatment was prescribed: prednisolone 20 mg/day, sulfasalazine 3 g/day, gentamicin 240 mg/day, enzyme preparations, infusion therapy with solutions of electrolytes and proteins. During the treatment, the condition improved somewhat, but the frequency of bowel movements remained up to 5-7 times a day, and in the evening the body temperature continued to rise to subfebrile levels. To clarify the diagnosis and develop further management tactics, he was hospitalized in the gastroenterology department of MONIKI.
The condition upon admission was severe. Correct physique, sharply reduced nutrition. Height – 181 cm, weight – 48 kg. The skin and visible mucous membranes are pale and clean. Peripheral lymph nodes are not enlarged. There is no swelling. In the lungs there is vesicular breathing, no wheezing. The heart area is not changed, tachycardia is up to 95 beats/min, blood pressure is 100/60 mm Hg. Art. The tongue is moist with a slight white coating at the root. The abdomen is moderately swollen, painful on palpation in the lower parts, more in the right iliac region. The liver and spleen are not enlarged. Stool up to 3-4 times a day, volume up to 300 ml, mixed with blood and mucus. The urinary system is unremarkable.
In blood tests: hemoglobin – 110 g/l, erythrocytes – 3.75 × 1012/l, color index – 0.87, leukocytes – 33.5 × 109/l (band cells – 24.5%, segmented cells – 38%, eosinophils – 0.5%, basophils – 2%, lymphocytes – 20%, monocytes – 14.5%), ESR – 40 mm/h, slight anisocytosis and poikilocytosis. Bilirubin – 8 µmol/l, cholesterol – 3.0 mmol/l, total protein – 70 g/l, thymol test – 1.8 units/l, glucose – 3.4 mmol/l, potassium – 3.2 mmol/ l, sodium – 134 mmol/l, ALT – 8 units/l, AST – 14 units/l, alkaline phosphatase – 318 units/l,
gamma-GPT – 39 U/L, serum iron – 3.5 µmol/L.
Coagulogram: prothrombin index - 94 (normal - 100%), thrombin time - 27 (normal - 28-30 seconds), fibrinogen - 3.8 g/l, factor XIII activity - 97%, fibrinolytic activity - more than 200 minutes, ethanol and betanaphthol tests are weakly positive.
Coprogram: stool of mushy consistency, creative rhea.
A general urine analysis revealed no pathology. Urine amylase – 30 (normal – 0–350 units/l).
Sigmoidoscopy: The perianal area is not changed, the examination was carried out at 12 cm. The mucous membrane is pale, the vascular pattern is clearly visible, there is no contact bleeding. In the lower ampullary section there are 2 linear ulcers up to 0.8 cm long, covered with fibrin. There is a fissure in the anal sphincter covered with fibrin. The sphincter is hyperemic, two hemorrhoids are purple in color.
Based on complaints of frequent stools up to 6–7 times a day mixed with blood, pain in the lower abdomen, more pronounced in the right iliac region, evening low-grade fever, acute onset of the disease, and examination of the rectal mucosa, a diagnosis was made: “Crohn’s disease.” , 1st attack, severe course with possible localization in the ileum, colon or combined localization (small and large intestine).
In accordance with the diagnosis, treatment was prescribed: methylprednisolone 500 mg/day intravenously, 0.5% metronidazole 300 ml/day intravenously, cefazolin 3 g/day intramuscularly; infusion therapy: 400 ml of 5% glucose solution intravenously by drip with simultaneous administration of potassium preparations (panangin 10 ml, 4% KCl solution), ascorbic acid 10 ml, co-carboxylase 100 mg, hemodez 400 ml/day, albumin 100 ml/day; enzyme preparations (Creon 6 drops/day); drug for parenteral nutrition.
On the 3rd day (04/05/02) of the patient’s hospital stay, an objective examination revealed intestinal obstruction. Radiologically it was confirmed by the presence of small-colic obstruction. From this moment until the patient was transferred to the surgical department, intermittent intestinal obstruction persisted. The first intestinal bleeding occurred on 04/07/02 – on the 4th day of the patient’s hospital stay, when the stool took on the appearance of “raspberry jelly” in a daily volume of about 400 ml. The patient is examined by a surgeon. It was decided to intensify infusion therapy with the introduction of electrolyte-protein mixtures and fresh frozen plasma with a total volume of up to 3 liters. The daily stool volume ranged from 350 at the time of admission to 700–800 ml in the form of “raspberry jelly” with repeated intestinal bleeding. Due to the severity of the condition, it was not possible to conduct an examination of the large and small intestines. An esophagogastroduodenoscopy was performed, which revealed an ulcer of the upper wall of the duodenum with severe perifocal edema and an inflammatory shaft. Ultrasound examination of the abdominal organs revealed uneven dilation of the intestinal loops; no pathology was detected in the parenchymal organs.
On April 22, 2002, the patient developed hemorrhagic rashes on the skin of the legs, in the area of the knees, and on the anterior wall of the abdominal cavity. In the general blood test: hemoglobin – 180 g/l, erythrocytes – 5.66 × 1012/l, leukocytes – 6.6 × 106/l, ESR – 1 mm/h. From that moment on, the patient's condition was regarded as extremely serious. With a diagnosis of Crohn's disease, a hormonally resistant form, the first attack, complicated by recurrent intestinal bleeding, partial small-colic obstruction and disseminated intravascular coagulation, the patient was urgently transferred to the abdominal surgery department.
After intensive preoperative preparation (glucose-electrolyte-protein mixtures in a total volume of up to 3.5 l, pefloxacin 800 mg/day, methylprednisolone 250 mg intravenously, famotidine 40 mg/day, nadroparin 0.3 ml subcutaneously), the patient underwent a subtotal colectomy within apparently changed section of the intestine - 29 cm of the ileum and the entire colon to the lower ampullary part of the rectum were removed with the application of an ileostomy according to Brooke.
On macroscopic examination: the large intestine is 80 cm long with a segment of the ileum 18 cm long. The small intestine is 3 cm in diameter, the relief of the mucous membrane is not changed. Colon diameter ranged from 5 to 7 cm; over a large area, the intestinal wall is thickened, compacted, the mucous membrane is lumpy with multiple ulcerative defects of irregular shape, in places merging with each other, and areas of a dark red color. Resection was performed within the unchanged mucous membrane (Fig. 1).
Microscopic examination: the changes correspond to diffuse angiodysplasia of the colon with the presence of multiple angioectasia and cavernous microhemangiomas in the submucosal layer, extending in places to the muscular plate propria (Fig. 2).
Changes in the mucous membrane are secondary in nature, localized over clusters of well-formed vessels: multiple subacute and chronic erosions, flat ulcers, dysregenerative restructuring of the crypts (Fig. 3 and 4).
The postoperative period was uneventful, but the patient's condition remained severe due to persistent signs of disseminated intravascular coagulation. General blood test in the postoperative period: hemoglobin – 74 g/l, erythrocytes – 2.55 × 1012/l, color index – 0.87, leukocytes – 7.8 × 109/l (band cells – 12%, segmented cells – 57% , lymphocytes – 25%, monocytes – 6%, platelets – 170.8 × 109/l), ESR – 22 mm/h. Indicators of the coagulation system: coagulation time - 65 (normal - 70-80 seconds), tolerance to plasma heparin - 35 seconds (normal - 5-8 minutes), prothrombin index - 88 (normal - 90-105%), plasma fibrinogen - 2 .6 (norm – 2–4 g/l).
The patient received massive infusion therapy (glucose-potassium mixture 400 ml, etamsylate 800 mg dissolved in 200 ml of physiological solution, rheopolyglucin 400 ml, aminosteril 500 ml, pefloxacin 400 mg × 2 times a day intravenously). On the 12th day, the wound healed by primary intention, the sutures were removed, and the ileostomy functioned normally.
On the 34th day after the operation, the patient was discharged in a stable condition of moderate severity for follow-up treatment on an outpatient basis under the supervision of a surgeon at the place of residence with recommendations for frequent fractional meals. Additionally, enzyme preparations (Creon, pancitrate) are recommended, 1-2 capsules with meals, taking iron supplements, limiting physical activity.
The presented observation indicates the difficulty of diagnosing colon angiodysplasia due to the similarity of some of its clinical and morphological manifestations with inflammatory and tumor diseases. Characteristic signs of the disease are most often detected during fibrocolonoscopy [11], the effectiveness of which is determined by the qualifications and experience of the endoscopist. Areas of the affected intestinal walls appear as polypoid dark purple formations, often with a bluish tint, protruding into the intestinal lumen. This picture corresponds to the cavernous type of angiodysplasia. Upon surface contact, slight bleeding occurs. In the capillary form, these signs are less pronounced. In the affected area, smoothness of the mucous membrane is noted [8]. It is bluish in color or slightly hyperemic with areas of thickening or sharply contoured, dilated, tortuous vessels. Almost always there is a clear border with the unchanged mucous membrane of the colon. Biopsy is not recommended in patients with congenital angiodysplasia of the colon due to the risk of significant bleeding. When irrigoscopy using the double contrast method, multiple filling defects, eroded contours with obligatory distortion of the submucosal layer of the intestine, as well as multiple atypically located pelvic phleboliths are detected [10].
Our other observation also relates to a rare pathology of the development of the vascular system of the intestinal wall, such as the Randu-Weber-Osler syndrome.
Patient Z., 18 years old, was admitted to the gastroenterology department of MONIKI on July 10, 2001 with complaints of progressive weakness, dizziness, rapid heartbeat, shortness of breath, loose stools mixed with a large amount of dark blood.
She became acutely ill on 07/04/01, when severe weakness, nausea, vomiting of eaten food appeared, then profuse loose stools mixed with dark blood. Body temperature did not significantly increase. She was hospitalized in the infectious diseases department at her place of residence by ambulance, where on 07/05/01 vomiting and loose stool mixed with blood reappeared. The diagnosis of intestinal infection was rejected, and anemia was detected (hemoglobin - 44 g/l). The patient was transferred to the intensive care unit of the surgical department at her place of residence, where sigmoidoscopy revealed a rectal ulcer at a distance of 7–10 cm from the anus. Hemostatic (erythrocyte mass, protein), antibacterial and steroid therapy was carried out. The patient's condition progressively worsened. Anemia persisted. There were no bowel movements for the next four days. To exclude ulcerative colitis, the patient was transferred to the gastroenterology department of MONIKI.
Upon admission, the patient's condition was assessed as extremely serious. Increased nutrition, puffy face, pasty lower extremities. Pronounced pallor of the skin. Peripheral lymph nodes accessible to palpation are not enlarged. Tachycardia up to 110 beats/min was noted, blood pressure was 130/60 mmHg. Art. The abdomen is soft and painless on palpation, there are no symptoms of peritoneal irritation. The liver and spleen are not enlarged. No pathological changes in the lungs or urinary system were detected.
The patient's heredity is not burdened; there are no indications of vascular pathology in close relatives.
A study of peripheral blood revealed anemia (hemoglobin - 35 g/l, red blood cells - 1.45 × 1012/l), thrombocytopenia (87 × 109/l), leukocytosis (12 × 109/l), accelerated ESR (70 mm/h ), shift of the leukocyte formula to metamyelocytes (1%), anisocytosis, poikilocytosis, anisochromia, erythronormoblasts were detected - 4: 100. ECG - metabolic changes in the myocardium of the left ventricle.
The patient was examined by a hematologist, hemolytic anemia and crisis were diagnosed; Consulted by a neurologist - hypoxic encephalopathy due to severe anemia. An intravenous infusion of 200 ml of red blood cells was performed, and 100 mg of metronidazole was administered. During sigmoidoscopy, dark, pasty fecal contents were found in the ampulla of the rectum.
Examined by an abdominal surgeon. Gastrointestinal bleeding was diagnosed. Transferred to the abdominal surgery department.
Colonoscopy was performed on July 11, 2001 (examination up to the upper third of the sigmoid colon, but it was not possible to go further due to the large amount of unremovable hemorrhagic contents). Linear ulcers of the mucous membrane up to 6–7 cm in length and up to 1 cm in width with fibrin overlay were found. The ulcers are superficial with diapedetic bleeding from the edges. A detailed examination is not possible due to ongoing bleeding. Conclusion: Ulcerative colitis? Crohn's disease?
At the consultation, a fulminant form of nonspecific ulcerative colitis was diagnosed, complicated by intestinal bleeding and toxic dilatation; a decision was made on urgent surgical intervention.
Laparotomy was performed on July 11, 2001. During revision of the abdominal cavity, a pronounced dilatation of the proximal colon to the middle third of the sigmoid colon was noted, in the lumen of which there were blood clots. The loops of the colon are bluish in color, the serous layer is not shiny. The mesentery of the colon is slightly edematous, with multiple enlarged soft lymph nodes. The small intestine is not changed, there is no blood in its lumen. No other abdominal pathology was found. A subtotal colectomy was performed to the level of the lower third of the sigmoid colon with resection of the ileum (15 cm) and the appendicular process. An ileostomy was performed.
Esophagogastroduodenoscopy from 07/12/01 – secondary anemia of the mucous membrane of the esophagus, stomach and duodenum. Repeated examination on July 19, 2001 – hemorrhagic duodenitis due to anemia of the mucous membrane.
Morphological examination of the intestine: on the section, the intestinal lumen is filled with bloody masses, the appendix is thickened, deformed, the intestinal wall is deformed, areas of narrowing alternate with those of expansion and thinning. In the narrowing zone there are deep recesses like ulcers. There is no histological evidence for nonspecific ulcerative colitis. Noteworthy is the abundance of clusters of malformed vessels of the sinusoidal type (angiectasia), as in Randu-Weber-Osler disease. These formations are located in the submucosal layer of the large and small intestines, and in some places in the lamina propria of the mucous membrane. Conclusion: pathology of the development of the vascular bed of the intestinal wall according to the type of Randu-Weber-Osler syndrome.
Coagulogram: increased fibrinogen content to 5.3 (normal – 2–4 seconds), positive betanaphthol test.
In the postoperative period, an increase in body temperature to 38 °C and relapses of intestinal bleeding (discharge from the ileostomy up to 1600 ml/day) were noted on the 3rd, 8th and 12th days after surgery.
Intensive infusion therapy was carried out, including blood transfusions: 6.53 liters of single-group blood, 2 liters of red blood cells, 3 liters of plasma, 150 ml of cryoprecipitate. The following were administered intravenously: methylprednisolone 500 mg/day, famotidine 40 mg/day, metronidazole 300 mg/day, cefaxone 4 ml/day. The volume of injected fluid is up to 3 l/day.
During therapy, the condition stabilized, no relapses of bleeding were observed, peripheral blood parameters normalized: hemoglobin - 116 g/l, erythrocytes - 3.99 × 1012/l, leukocytes - 9.8 × 109/l, ESR - 16 mm/h. On the 37th day, the patient was discharged in relatively satisfactory condition for outpatient follow-up treatment at her place of residence.
Despite the differences in the etiological factors that led to the development of these diseases, morphological changes in the affected parts of the intestine, the treatment approaches in these two cases turned out to be identical - radical excision of the affected areas of the intestine with preservation (where possible) and restoration of the function of the altered organ. In the future, the prognosis for life in most cases is favorable. However, it should be noted the possibility of repeated bleeding from parts of the intestine that were intact during the operation (spread of the pathological process). Deaths from rebleeding are rare.
