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Acute acalculous cholecystitis (AAC) is usually seen as a complication of major surgery or trauma. Although this entity is well-known in the surgical literature, little has been written about it in the radiologic literature. A review of patient records from 1975 through 1982 revealed 16 patients with pathologically confirmed AAC on whom at least 1 sonographic study had been performed. Thickening of the gallbladder wall, a subserosal "halo" of edema, pericholecystic abscess, and marked gallbladder distention were consistent findings in AAC. In the proper clinical setting, these otherwise nonspecific findings allow a prompt and accurate diagnosis.

Summary Laparoscopic marsupialization of lymphocele carries 13% recurrence rate, 6% injury to other organs, 12% omentoplasty, 6% open conversion and 1.8 average hospital days. A novel, simplified technique of intraperitoneal catheter drainage of lymphocele is described. Under ultrasound guidance and using the Seldinger technique, a 13F Hickman catheter was introduced into the lymphocele and connected subcutaneously to a small peritoneal window performed 5 cm apart. During the last 8 years the procedure was performed under local anesthesia in 14 patients on an outpatient basis with success (e.g. resolution of both hydronephrosis and lymphocele). One wound infection required removal of the catheter without recurrence. In another patient laparoscopy showed retraction of the catheter under the peritoneum as cause for lymphocele recurrence. In all cases absence of injury to the GU tract was confirmed by absence of extravasation of indigo carmine given intravenously. Intraperitoneal catheter drainage of post‐transplant lymphocele is an effective outpatient procedure. It avoids the drawbacks of general anesthesia required by open and laparoscopic marsupialization procedures and deserves to be evaluated in a multicenter study.

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