Hungarian Radiology

[A case of gastrointestinal stromal tumor of the small intestine causing gastrointestinal bleeding]

TAMÁS Krisztina, KIRÁLY Ágnes, KALMÁR Katalin, WENINGER Csaba, TORNÓCZKY Tamás

JUNE 10, 2005

Hungarian Radiology - 2005;79(03)

[INTRODUCTION - The neoplastic disease of the small intestine - especially the gastrointestinal stromal tumor - is a rare disease, its diagnostics is not an easy task. CASE REPORT - The authors examined a 71-year-old female patient who presented hematemesis and melena. A small intestine tumor was detected by endoscopy and abdominal computed tomography as the source of gastrointestinal bleeding. Histology proved gastrointestinal stromal tumor. The characteristics of the tumor were reviewed based on the literature. CONCLUSION - Radiological imaging plays a significant role in the diagnosis of gastrointestinal stromal tumors.]

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[Prevention of thrombotic complications in vascular interventional procedures]

HORVÁTH László, BATTYÁNY István, ROSTÁS Tamás, HARMAT Zoltán, BODROGI Gabriella, RADICS Éva

[Procedures of vascular interventional radiology is linked inevitably a certain amount of risk of thrombotic complications, like intimal and vascular wall injuries, increased thrombotic risk caused by the catheter itself, etc. The first approach of thrombotic prevention was achieved by acetyl salicylic acid in case of peripheral arteries, this treatment was later replaced by long-term anticoagulation. Opportunities were provided by the recognition of risky blood characteristics in relation to thrombotic complications. Consequently, a well performed preparation and premedication of the patients could reasonably decrease the risk. The most important steps are the cessation of smoking, normalization of hemoconcentration and antithrombotic premedication. Better understanding of the nature of atherosclerotic progression led to the introduction of long-term fibrinolytic inhibition therapy. In the past decades beside patients with vascular stenosis, the oncology patients are also treated by different radiological interventions, like intraarterial chemotherapy and chemoembolization. The use of several-day-long infusion represent a new challenge, the treated vessels, the lumen and the surface of the catheter must be prevented of thrombosis. For this purpose a few suitable drugs can be applied with mild anticoagulant and fibrinolytic stimulating effect. We use the sodium pentosan polysulphate.]

Hungarian Radiology

[Comparison of the results of lung helical CT and lung scintigraphy in pulmonary embolism]

SCHMIDT Erzsébet, WENINGER Csaba, BOROS Szilvia, BODROGI Gabriella, UDVAROS Eszter, ZÁMBÓ Katalin

[INTRODUCTION - The frequency of the pulmonary embolism is high and the underdiagnosis or delayed recognition of the disease occurs. Recently the helical CT is used to detect pulmonary embolism. The authors compare the results of single-slice spiral thoracic CT and lung scan. PATIENTS AND METHODS - During one year period chest CT examination was performed in 49 patients due to the suspicion of pulmonary embolism, in 30 of them lung scan was also performed. RESULTS - The results of the two diagnostic methods were the same in 21 cases out 30 (in 13/21 cases both methods demonstrated embolism and 8/21 cases the findings were normal). In the remaining nine cases the findings were different. CONCLUSIONS - The lung CT examination is a rapid, non-invasive method to depict the central pulmonary embolism and small infarcts in non fresh cases. The negative result of perfusion lung scan can exclude the pulmonary embolism. If the lung scan demonstrates perfusion defect(s), it is necessary to perform another diagnostic tests (e.g. chest X-ray, ventillation scan). While the lung scan is a cheap, simple method with low radiation dose, it can play important role in the screening.]

Hungarian Radiology

[The possibilities of invasive radiological therapy of deep venous thrombosis and in vitro experimental examination of therapeutic factors affecting the treatment]

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[INTRODUCTION - The first part of this paper is an overview on the possibilities of invasive radiology treatment of deep venous thrombosis. In the next part an in vitro experiment is described demonstrating the basics of mechanical and pharmaco-mechanical catheters applied in deep venous thrombosis. MATERIALS AND METHODS - The in vitro haemodinamic model of the iliocaval veins contained a thermostat and an engine responsable for pulsing circulation according to the venous system. We tested the chance of driftage of thrombus in different age according to the state of the collateral system. Thrombectomy was made by mechanical (Simpson-catheter) and pharmaco-mechanical (Pulsespray catheter) ways. The weight of the non-drifted thrombi was measured. RESULTS - All the 16 thrombus were flown while collateral system was closed and none of them were flown while the collateral system was open but the rate of their solubility was different. The efficacy of the thrombus-removal by Simpson catheter was better than by Pulse-spray catheter and fresh thrombus-fragments were more soluble than older ones. CONCLUSION - By this in vitro experiment we opened the way for using mechanical and pharmaco-mechanical catheters in deep venous thrombosis.]

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[INTRODUCTION - Amyloidosis - at an early stage - has no typical clinical findings, but severe weight loss, hepatomegaly and elevated serum alkaline phosphatase level can be clues to the diagnosis. CASE REPORT - We report a 66-year-old woman presenting at our unit with massive gastrointestinal bleeding. Gastroscopy was performed and a haemorragic ulcer was found. Before admission she had lost 20 kg-s in 6 months. The patient had hepatomegaly and markedly elevated serum alkaline phosphatase level. These findings suggested the presence of malignancy, but ultrasound, CT and MR examinations did not support this hypothesis. After liver biopsy the diagnosis of amyloidosis was proven. She had rapid downhill clinical course of gastric bleeding from an ulcer resulting in death. CONCLUSIONS - So far, no specific treatment exists for amyloidosis, but there have been promising results reported about liver transplantation and autologous stem-cell transplantation.]

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[Isolated gallbladder rupture following blunt abdominal trauma]

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[INTRODUCTION - Gallbladder injuries following blunt abdominal trauma occur rarely and are usually associated with damage to other abdominal organs. Isolated rupture of the gallbladder is extremely rare. CASE REPORT - A 42-year old intoxicated male patient suffered a blunt abdominal trauma 4 days before the admission. The physical examination was of normal and no specific laboratory values were found. Ultrasound examination demonstrated the gallbladder with hyperechoic thickened wall and inhomogenous content. Beside of the gallbladder fluid collection was detected with irregular margins. To prove the diagnosis of gallbladder injury computed tomography was carried out. Break of the gallbladder wall and hight density lumen content, corresponding to blood was detected. Around the gallbladder an irregular fluid collection was seen, which reached the level of the transverse section of the mesocolon. Computed tomography excluded traumatic lesion of other parenchimal abdominal organs. Surgery confirmed the radiological diagnosis. CONCLUSION - The patient with isolated gallbladder injury had a multiphasic clinical course. Sometimes the diagnosis has to be established at a relatively asymptomatic stage. The basic methods of the diagnostics are the ultrasound examination and computed tomography.]

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[Prediction of rebleeding and its importance in the treatment of upper gastrointestinal bleedings originating from peptic ulcers]

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[Nearly 50% of upper gastrointestinal bleedings originate from peptic ulcers. While the number of scheduled operations carried out due to peptic ulcers is decreased to nearly zero in the past decade, the number operations due to the complications of peptic ulcers remained unchanged. Bleeding from peptic ulcers usually stops spontaneously in a remarkable part of the cases, but in many times rebleeding is anticipated. These patients present several problems which are difficult to treat, and patients in need of emergency surgery are usually from this group. This is the main reason why the identification of those patients with high risk for rebleeding is important. With the help of the modified "Baylor Bleeding Score" rebleeding can be predicted. In the case of high risk for rebleeding, an early elective operation can avoid a latter urgent operation, which has markedly higher mortality and morbidity. In peptic ulcer bleeding, endoscopic treatment modalities have the priority. Most preferred method is the injection of different haemostatic drugs, with thermal methods and haemoclips being also accepted. Among surgical treatments, ”aggressive” resection operations are preferable. Additional "conservative" medical treatment with proton pump inhibitors is also recommended.]

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[Antiplatelet therapy with acetylsalicylic acid - Cardiovascular indications and haemorrhagic complications]

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[Acetylsalicylic acid effectively blocks the activation of platelets, and becomes a basic element of antithrombotic therapy of patients with high cardiovascular risk. Decrease of platelet reactivity is due to the irreversible inhibition of COX- 1 isoenzime in platelets during treatment. Choosing the right dose is still not an easy task. Bleeding side effects are frequently seen in patients treated with this drug worldwide. Clinical benefit does not improves with escalated doses (300 mg), however the risk of haemorrhagic events increases. Therefore acetylsalicylic acid dose should be reduced to the effective minimal dose (75-150 mg daily) after the acute phase of atherothrombosis in order to prevent side effects. Effect of acetylsalicylic acid differs individually, it might be important screening out those patients who respond less to the drug. Resistance is still an evolving field, proper methodology is to be determined. Right indications of acetylsalicylic acid needs balance between reaching clinical benefit and avoiding side effects. The Hungarian Cardiovascular Therapeutic Consensus Conference 2009 suggested acetylsalicylic acid in primary prevention for those males only, who have overt cardiovascular risk, and SCORE result is more than 10%, with no gastrointestinal haemorrhage in medical history, and with a well-controlled hypertension. Lifelong aspirin prevention should be used after all diagnosed cardiovascular atherothrombotic event as a cornerstone of secondary prevention with low dose (75-150 mg daily) in both genders.]

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[INTRODUCTION - The xanthogranulomatous cholecystitis is a rare and benign form of lesions associated with diffuse thickening of the gall bladder wall. It is important to recognize it radiologically because it can be mistaken easily for gall bladder carcinoma. The characteristic US, CT and MR findings, however, may be helpful in the differential diagnosis. CASE REPORT - We present the cases of two middleaged female patients suffering from right upper quadrant, radiating abdominal pain for several weeks without occurrence of fever. In both patients, the ultrasound examination revealed marked thickening of the gall bladder wall containing hypoechoic nodules. Further, non-specific sign such as cholecystolithiasis and fine infiltration of the adipose tissue surrounding the gall bladder and dilatation of extrahepatic or intrahepatic bile ducts were visible. On the post contrast CT images, rim enhancement was detectable. MR/MRCP examination showed a sharp delineation of the gall bladder from the liver parenchyma. Both patients underwent cholecystectomy. The pathological examination excluded malignancy and confirmed the diagnosis of xanthogranulomatous cholecystitis. CONCLUSION - The characteristic features of xanthogranulomatous cholecystitis (hypoechoic xanthogranulomas in the markedly thickened gall bladder wall and the presence of calculi) can be detected by ultrasound examination. CT or MRI may play an important role in confirmation of the diagnosis of an inflammatory process and provide useful information in exclusion of gall bladder carcinoma.]