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Purpose: The diagnosis of the rare primary malignant tumors of the pulmonary arteries is often delayed as symptoms are nonspecific.Methods: Computed tomography (CT) and magnetic resonance imaging (MRI) of three patients with occlusion of the right pulmonary artery, two with sarcoma and one with chronic thromboembolic disease were analyzed for discriminating diagnostic criteria.Results: Criteria suggesting pulmonary artery sarcoma are inhomogeneous high or low attenuation (hemorrhage, necrosis), soft-tissue density in pulmonary arteries, vascular distension, enhancement after administration of gadopentetate dimeglumine. Criteria for chronic thromboembolic disease are homogeneous soft-tissue lesions, abrupt vascular narrowings and cut-offs, as well as regional parenchymal hyperdensities.Conclusion: CT and MRI provide complementary findings suggesting advanced pulmonary artery sarcoma instead of chronic thromboembolism. [ABSTRACT FROM AUTHOR]

Percutaneous penile venoablation with sclerosing agents and coils was performed in 58 patients. Of 104 ablations attempted, 44 of 51 (86%) transpenile, and 46 of 53 (86.7%) retrograde interventions were technically successful. In 40 patients (69%) erectile function improved (intercourse was possible in 21 without additional measures). Initially improved erectile function deteriorated in 24 patients during follow-up (in an average of 6 months); in 15 of these, intercourse was still possible with injection of vasoactive drugs. In 7 patients, repeat venoablation improved erectile function again. Hot contrast medium was slightly superior to sodium morrhuate as a sclerosing agent. In successfully treated patients, the average decrease in venous leakage was 30 ml/min vs 13 ml/min in treatment failures, with considerable overlap between both groups. Only minor complications were observed. We conclude that percutaneous penile venoablation is technically feasible, and safe. Whether the procedure will have a definite role in the treatment of venogenic impotence, however, still has to be determined. [ABSTRACT FROM AUTHOR]

During the past few years, a new tumor type has emerged in the pediatric and adolescent group of cancer patients, which has been designated malignant peripheral neuroectodermal tumor (MPNT). This tumor has some clinical and pathological signs in common with either soft-tissue sarcomas or classic Ewing's sarcoma, but is defined as a distinct entity because of its immunohistological characteristics. The tumor expresses neuronal markers, but the pattern varies: chromogranin, neuron-specific enolase, synaptophysin, protein S-100 and others. MPNT can occur in the urogenital region. The differential diagnosis on clinical grounds must include Ewing's and soft tissue sarcomas, and also Wilms' tumor and its variants. MPNT are often wide spread in the urogenital region when first diagnosed. Response to radiotherapy and combination chemotherapy is limited. Radical surgery is not always possible. The prognosis therefore remains rather poor at this time. A selection of MPNT patients is presented to demonstrate the various problems associated with this diagnosis. MRI and CT of all patients showed large tumors with direct infiltration of the surrounding structures. MRI is the best imaging modality for diagnosis and therapy monitoring in these tumors, because of its high soft-tissue contrast. [ABSTRACT FROM AUTHOR]

The purpose of this study was to determine the effectiveness of venous occlusions achieved by embolization with platinum microwire coils. Follow-up venographies in 19 patients, 1-20 months (average 8 months) after coil embolizations, were evaluated. Twenty-eight of 126 (22.2%) coil embolizations were found to be patent. Coils which had not formed or partially formed upon embolization had a patency/recanalization rate of 37.5% (12/32). Among coils which had formed nearly completely or completely only 16 of 95 (17%) showed venous patency. As coil embolization had been augmented by sclerotherapy in all patients, the effectiveness of long-term venous occlusion by platinum wire coils alone is probably lower than our figures indicate. We conclude that attention to complete or near-complete coil formation upon embolization appears to be critical to maximize long-term occlusive effects of platinum microcoils. Their effectiveness in general, however, is lower than anticipated. [ABSTRACT FROM AUTHOR]

History and Clinical Finding: In a 67-year-old female patient with upper abdominal pain, computed tomography showed a partly calcified swelling of the pancreatic head and wall thickening of the duodenum., Examinations: Inpatient physical examination findings were normal. Laboratory showed increased pancreatic enzymes (amylase 210 U/l [Standard range: 28-100 U/l], lipase 2115 U/l [Standard range: 23-300 U/l]) and inflammation values (CRP 11.7 mg/l [Standard range: < 5.0 mg/l]), otherwise largely normal laboratory parameters. In the esophago-gastro-duodenoscopy, biopsy of swollen, partly stenosing mucous membrane areas in the duodenum was performed., Diagnosis: Histology revealed partial erosive duodenitis, no evidence of a malignant tumor. If chronic calcifying pancreatitis was suspected, a sonographically guided percutaneous biopsy of the pancreatic head was performed to exclude a tumor., Treatment and Course: Post-biopsy, the patient developed abdominal pain and temporary circulatory instability with nausea/vomiting and a drop in Hb to 7.5 g/dl [Standard range: 12.3-15.3 g/dl]. The sonographic suspicion of a retroperitoneal hematoma was confirmed by computed tomography. The cause was a haemorrhage from a renal artery perforation on the right side, which could be stopped by immediate angiographic intervention with a covered stent., Conclusion: After percutaneous biopsy, vascular perforation must always be considered. Computed tomography provides a reliable and quick diagnosis. Minimally invasive percutaneous insertion of a covered stent is the therapy of choice in the case of a renal artery accessible to stents., Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.)

A 46-year-old woman presented with acute abdominal pain in the right upper quadrant. Esophagogastroduodenoscopy revealed a duodenal stenosis within the horizontal part of the duodenum. Based on the findings of abdominal computed tomography (CT), endosonography, Doppler duplex sonography and angiography, the diagnosis of an aneurysm of a branch of the inferior pancreaticoduodenal artery was established. This arterial branch was part of a collateral circulation between the superior mesenteric artery and the proper hepatic artery caused by obturation of the celiac artery. The symptomatic duodenal stenosis was the result of a local hematoma due to prior rupture of an aneurysm. After successful coiling of the afferent vessels to the aneurysm follow-up examinations showed progredient resorption of the hematoma and the patient was free of complaints.

Abdominal fistula caused by an ingested wooden spit, which penetrated the intestinal wall and remained in the abdominal wall: a laparascopy was performed in a 41-year-old man suffering from acute appendicitis and an inflamed Meckel's diverticulum. After removal of the appendix and the diverticulum, a fistula developed in the excision channel of the left quadrant of the abdominal wall post-operatively. Despite repeated incision of the abscess in the course of 2 months, the fistula did not heal. Ultrasound examination of the abdominal wall was therefore performed. The postoperative status was without conspicuous findings. We could, however, detect a foreign body, a few centimetres long and 2-3 mm thick, displaying a smooth surface, deep down in the abdominal wall. A fistulography confirmed the diagnosis. After removal of the wooden spit, complete healing of the fistula in the abdominal wall was observed. Subsequently, the patient reported to have eaten a beef roulade, fixed with a wooden spit, 7 weeks before the abdominal operation.