[Malignant biliary obstruction, general review and clinical practice].

This review recalls the clinical, anatomic, physiopathological and etiological features necessary in the management of patients with neoplastic bile duct obstruction and exposes the current practice concerning endoscopic and radiologic palliative drainage. Clinical practice according to the clinical situations is explained. This review exposes complications management for patients having undergone an endoscopic or percutaneous drainage of the biliary ducts, the particular case of periportal stenosis, the respective indications of endoscopic and transhepatic percutaneous drainage, usual immediate evolution according to the type of the stenosis and the technique used as well as the management in case of stent obstruction.

Prophylactic embolization of renal angiomyolipomas: evaluation of therapeutic response using CT 3D volume calculation and density histograms.

Purpose: To evaluate the efficacy and tolerance of prophylactic embolization of angiomyolipomas (AMLs) and to analyze the therapeutic response by using three-dimensional 3D volume calculation and 3D quantification of fatty and angiomyogenic components during computed tomography (CT) follow-up.

Materials And Methods: Over a 51-month period, 30 patients with 34 AMLs (mean diameter, 82 mm ± 37; range, 30-173 mm) underwent 37 prophylactic embolization procedures. The protocol included supraselective arterial embolization with a combination of absolute alcohol, microparticles, and coils.