Duodenal hematoma. A mechanical cause for enterogastric reflux in cholescintigraphy.

Enterogastric reflux occurs in normal and abnormal conditions. When pronounced, it is a nonspecific indicator of pathology. There are relatively few published reports discussing enterogastric reflux as a prominent finding on cholescintigraphy.

A false-positive scan for testicular torsion and false-negative scan for epididymitis.

A 17-year-old boy underwent a radionuclide scan for testicular torsion. The scan demonstrated a cold defect with a warm ring, indicating a "missed" testicular torsion. Operative findings, however, demonstrated epididymitis.

Indium-111 DTPA flow study to evaluate surgically implanted drug pump delivery system.

The authors describe a radionuclide technique for evaluating intrathecal and intraventricular infusions by surgically implanted drug pump delivery systems. Sixteen patients underwent flow studies, performed by injecting 500 mu Ci of indium-111 DTPA into the pumps. Early and delayed images were obtained.