Bing-Neel syndrome with a paravertebral mass.

Bing-Neel syndrome, a rare neurological complication of Waldenström macroglobulinemia, is caused by the direct infiltration of malignant lymphoplasmacytic cells into the central nervous system. We report a patient who presented with back pain, weakness, lower extremity numbness, and gait disturbance accompanied by immunoglobulin M paraproteinemia and lymphoplasmacytic lymphoma in the bone marrow. Thoracic and lumbar magnetic resonance imaging revealed a long paravertebral mass around the spinal column, but the direct infiltration could not be proven.

The clinical significance of breast MRI in the management of ductal carcinoma in situ diagnosed on needle biopsy.

Objective: To identify the factors associated with invasive disease in ductal carcinoma in situ diagnosed on needle biopsy by analyzing breast magnetic resonance imaging findings with the histopathological factors of biopsy specimens.

Methods: This was an institutional review board-approved, Health Insurance Portability and Accountability Act-compliant study. Seventy-five ductal carcinoma in situ patients diagnosed by needle biopsy who underwent preoperative magnetic resonance imaging were retrospectively reviewed.

[Is intravenous contrast enhancement effective in improving CT diagnosis of hepatic disease?].

Purpose: The purpose of this study was to evaluate the effectiveness of contrast enhancement in the diagnosis of hepatic disease.

Materials And Methods: 2761 cases involving CT of the liver and abdomen were analyzed using logistic analysis. CT was either helical-CT (SDCT) or multi-detector CT (MDCT), with power injector.