Biomedical subjects
R Zissin
Publications and source records attributed to R Zissin.
[Tomographic findings in extracranial anticoagulant related hematomas].
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CT diagnosis of malignant degeneration of an ovarian teratoma.
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Liver capsular retraction--not a specific sign of malignancy: a reminder.
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Octreotide treatment in patients with severe acute pancreatitis.
We investigated the effect of octreotide in the treatment of severe acute pancreatitis in a case-control study. Experimental and clinical studies on the effect of octreotide in the treatment of acute pancreatitis have shown controversial results. Since January 1992, we have been conducting a prospective randomized study on the effect of octreotide in severe acute pancreatitis, in three hospitals in Israel. The entering criteria included three or more of the Ranson prognostic signs and CT findings of severe pancreatitis. Patients were randomly assigned to conservative treatment either with or without octreotide (0.1 mg subcutaneously three times a day). The end points of the study included: complication rate (ARDS, sepsis, renal failure, pseudocyst, fistula, and abscess), length of hospital stay, and mortality. From January 1992 to December 1996, 60 patients entered the study. After evaluating the files, 10 patients were excluded due to failure to meet the entering criteria, incomplete data, or incorrect diagnosis. Of the remaining 50 patients, 25 were assigned to octreotide (treatment group) and 25 to conservative treatment only (control group). The two groups matched with regard to age, sex, etiology, and severity of the disease. The complication rate was lower in the treatment group with regard to sepsis (24% vs 76%, P = 0.0002) and ARDS (28% vs 56%, P = 0.04). The hospital stay was shorter in the treatment group (20.6 vs 33.1 days, P = 0.04). Two patients died in the treatment group and eight in the control group (P < 0.019). These results suggest that octreotide may have a beneficial effect in the treatment of severe acute pancreatitis.
Acute renal failure and paraplegia in a patient with a pelvic-ring fracture.
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Acute appendicitis with intestinal non-rotation presenting with partial small bowel obstruction diagnosed on CT.
The findings of acute appendicitis on CT have been extensively described in the literature. This is a report of a case of acute appendicitis in a patient with intestinal non-rotation presenting with partial small bowel obstruction. Analysis of the CT findings allowed a correct diagnosis.
CT diagnosis of acute appendicitis in a femoral hernia.
We present the first case, to our knowledge, of a patient with a CT diagnosis of acute appendicitis strangulated in a femoral hernia, a known but very rare entity. CT features of acute appendicitis within the hernia established the correct diagnosis. The pathological findings confirmed the diagnosis of this rare location of appendicitis.
The significance of a positive round belly sign on CT.
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Nonopacification of an existing kidney on excretory urography.
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Computed tomography diagnosis of a perforating malpositioned central venous catheter.
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Spontaneous intramural esophageal hemorrhage.
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Acute bleomcyin-induced pneumonitis mimicking lobar pneumonia: reversal with high dose corticosteroids.
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[Role of CT in small bowel obstruction].
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Imaging of mucocoele of the appendix with emphasis on the CT findings: a report of 10 cases.
AIM: Mucocoele of the appendix denotes an obstructive dilatation of the appendiceal lumen due to abnormal accumulation of mucus. It is sometimes associated with pseudomyxoma peritonei, which predicts a malignant origin. We present the CT findings and additional imaging studies of 10 patients with neoplastic appendiceal mucocoele and discuss the clinical implications. MATERIALS AND METHODS: Abdominal CT findings from 10 patients with appendiceal mucocoele were reviewed. Barium enema, US and MRI were additionally performed in three patients. There were five men and five women aged 45-80 years. Special attention was directed to the shape and nature of the mass, its relation to the caecum and the presence of ascites or peritoneal implants, as well as possible additional ovarian tumours in female patients. RESULTS: The mucocoele was an incidental finding in five patients. They were either spherical or elongated cystic lesions, attached to the wall of the caecum, six of them with mural calcification. Ascites were present in six patients and hypodense large peritoneal implants representing pseudomyxoma peritonei in four. Pathologically the series included five cases of cystadenoma (in one, a malignant pseudomyxoma peritonei subsequently developed), four cases of cystadenocarcinoma and one villous adenoma (this patient later developed pseudomyxoma peritonei). Pseudomyxoma peritonei was found in five cases. Three women had associated ovarian cystic tumour. CONCLUSION: The appearance of an appendiceal mucocoele is quite characteristic and can be diagnosed on CT. CT can also depict additional findings suggesting pseudomyxoma peritonei. In women with an appendiceal mucocoele the ovaries should be examined closely for cystic tumour and vice versa.
CT findings of glutaraldehyde colitis: a report of two cases.
The CT findings of two cases of gluteraldehyde colitis following flexible colonoscopy with normal results are described. Although the CT findings are non-specific, the diagnosis can be suggested by the radiologist who is aware of the previous endoscopy.
Bezoars in the stomach and small bowel--CT appearance.
AIM: The aim of this study was to present the computed tomography (CT) appearance of trichobezoars, phytobezoars and other unusual ingested material. MATERIALS AND METHODS: Seven patients diagnosed on CT with bezoars in the stomach or small intestine were reviewed with special attention on the characteristics of the intraluminal mass and the presence of proximal dilatation. RESULTS: There were six women and one man aged 14-81 years. CT was performed because of abdominal pain and a palpable abdominal mass. In none of the cases was the diagnosis suspected clinically. Four patients had a trichobezoar occupying the entire lumen of the stomach. It appeared as a concentric inhomogeneous mass with entrapped air, surrounded by contrast material. In the other three patients the bezoar was confined to the small intestine and was composed respectively of vegetable fibres, ingested toilet paper and an olive stone. The first two had a mottled appearance whereas the last one was small, spherical and well defined. Variable proximal dilatation of the small bowel was present in all three. CONCLUSION: With the increased use of CT in the evaluation of patients with non-specific abdominal pain, it is important to recognize the CT appearance of bezoars, as this diagnosis is often not suspected clinically.
Lung metastasis invading the left atrium--CT diagnosis.
A case of metastatic colonic adenocarcinoma invading the left atrium is reported in a patient with clinical signs of cardiac tamponade. The intracavitary extension of the tumour was clearly demonstrated by contrast enhanced CT. As CT plays an important role in the evaluation of patients with intrathoracic masses, intravenous contrast medium is recommended in those cases with associated clinical symptoms of heart disease or pericardial effusion. Its use may establish the diagnosis of cardiac involvement.