Andrew C. Wilbur

Chylous ascites: CT and ultrasound appearance.

An unusual but pathognomonic appearance of chylous ascites was observed on computed tomographic (CT) and ultrasound examinations of the abdomen in a patient with AIDS and disseminated tuberculosis. The images showed gradual development of fat-fluid level in the peritoneal collection when the patient maintained a recumbent position. The explanation for this phenomenon is provided together with a brief review of pertinent literature.

Klinefelter's syndrome associated with testicular microlithiasis and mediastinal germ-cell neoplasm

Klinefelters syndrome is a genetic disorder of male sexual differentiation characterized by an XXY karyotype. Although considered a benign condition, it is associated with several types of malignancies, including mediastinal germ‐cell neoplasm. In addition, Klinefelters syndrome has been rarely associated with testicular microlithiasis. Whereas patients with Klinefelters syndrome have an increased incidence of extragonadal germ‐cell neoplasms, patients with testicular microlithiasis have a predisposition to testicular germ‐cell neoplasms. To our knowledge, an extragonadal germ‐cell neoplasm has not been previously described in association with testicular microlithiasis. We present a patient with 2 unusual conditions, both of which are independently associated with Klinefelters syndrome: mediastinal germ‐cell neoplasm and testicular microlithiasis.

CT and MRI of uterine lipoleiomyoma

Uterine lipoleiomyomas are rare tumors containing variable amounts of fat. Diganostic considerations usually include ovarian fatty tumors and benign and malignant degeneration in ordinary leiomyomas. A case in which a preoperative diagnosis was made using computed tomography (CT) and magnetic resonance imaging (MRI) is presented. The fatty nature of the lesion was demonstrated with CT and standard spin echo MRI and further supported using inversion recovery MRI. MRI also clearly depicted the intrauterine location of the tumor.

Perforated jejunal diverticulum: CT diagnosis

A case of a perforated jejunal diverticulum with retroperitoneal extension is presented. Computed tomographic (CT) features and the plain radiographic appearance are described in this rare complication of a common pathologic finding.

Sinus histiocytosis with massive lymphadenopathy: MRI findings of osseous lesions

Abstract The case of a 20-year-old female with SHML and osseous involvement is presented. We describe three different patterns of involvement in the diametaphyseal portions of the long bones with similar MRI signal characteristics.

Ureteric obstruction by the right testicular vein: CT diagnosis

The close relationship of the ureter and gonadal blood vessels is often clearly demonstrated by computed tomography (CT). A case of ureteral obstruction in a man possibly caused by the crossing testicular vein is presented. Unlike the ovarian vein syndrome in women, which is often related to pregnancy and/or venous thrombosis, no predisposing factors were found.

High-field MRI of primary gallbladder carcinoma

The magnetic resonance (MR) imaging features are described in a case of gallbladder carcinoma presenting as a fungating mass associated with gallstones as well as biliary obstruction due to pancreaticoduodenal lymph node metastasis. The MR findings complemented diagnostic observations made on preoperative sonography and computed tomography of the abdomen.