[Radiologic after-care of transjugular intrahepatic stent shunt (TIPSS)]].

The transjugular intrahepatic stent-shunt (TIPSS) is a well accepted minimal invasive therapy for complications of portal hypertension: recurrent variceal bleeding, refractory ascites and liver failure due to the Budd-Chiari syndrome. The high frequency of shunt stenoses and occlusions makes regular follow up examinations essential. Despite modern non invasive imaging methods direct portography still is the gold standard for shunt surveillance in TIPSS.

[The intra-arterial calcium stimulation test in site diagnosis for surgical therapy of insulinoma].

Background: Approximately 10% of all insulinomas--the most common neuroendocrine pancreatic tumor--occur in multiple sites of the pancreas (e.g., multiple endocrine neoplasia type I) and rarely as islet cell hyperplasia.

[Follow-up of TIPSS by color-coded duplex sonography using an ultrasonic signal enhancer. First results].

A study was performed to determine the visualization of the transjugular intrahepatic portosystemic stent shunt (TIPSS) and the detection of stenosis by the use of a capillary transversing signal enhancer. In 37 patients 37 colour-coded duplex sonographies were performed before and after intravenous injection of the ultrasound signal enhancer Levovist (Schering, Berlin). The examinations were evaluated using a four-category score.

[Use of the ultrasound contrast medium levovist in after-care of liver transplant patients. Improved vascular imaging in color Doppler ultrasound].

Introduction: A study was carried out to determine whether an improvement in the detection of vascular signals in patients after orthotopic liver transplantation can be achieved by the use of ultrasound contrast medium in colour Doppler sonography.

Material And Methods: In the early postoperative follow-up of liver transplant recipients, 31 colour Doppler sonograms were obtained in 21 patients before and after intravenous injection of the ultrasound contrast agent Levovist (Schering, Berlin). A grading score with four categories was used to evaluate the sonograms with special regard to the visibility of colour and flow signals in the hepatic artery and also in the portal vein and the hepatic veins.

[After-care of TIPSS patients. Comparison between color Doppler ultrasound and portography].

Purpose: Comparison of color Doppler sonography and venous portography in patients with a transjugular intrahepatic portosystemic stent shunt (TIPSS).

Materials And Methods: In a prospective study 40 consecutive patients with TIPSS underwent venous portography and color Doppler sonography on the same day as follow-up. Shunt velocities were recorded within the TIPSS at the proximal (hepatic vein segment) and distal part (portal vein segment).

[Pigmented villonodular synovitis. Case reports and review of the literature].

Because this disease is so rare the optimum treatment of pigmented villonodular synovitis (PVNS), in particular the diffuse form differs in the literature. The most important surgical procedures are arthroscopic and open synovectomy. The prevention of disease progression, as well as joint destruction and dysfunction, depends upon the early diagnosis of PVNS.

Computed tomography and magnetic resonance imaging findings in primitive neuroectodermal tumours in adults.

Primitive neuroectodermal tumours (PNET) are highly malignant, undifferentiated supratentorial neoplasms arising from germinal matrix cells of the primitive neural tube. PNET occur primarily in young children; they are extremely rare in adults. PNET frequently seed within the central nervous system and may be multicentric at the time of diagnosis.

[Selective intraoperative cholangiography in laparoscopic cholecystectomy].

Routine use of intraoperative cholangiography during laparoscopic cholecystectomy is still widely advocated and standard in many departments; however, it is controversial. We have developed a new diagnostic strategy for the detection of bile duct stones. The concept is based on an ultrasound examination and on screening for the presence of six risk indicators of choledocholithiasis.