Inflammatory Pseudotumor: A Mobile Mesenteric Mass Gallium-Avid

An 8-yr-otd boy with a l-too history of culture-negative fever and anemia underwent gallium, ultrasound, and computed tomography studies as part of the evaluation of a fever of unknown origin. These studies revealed a mobile gallium-avid solid abdominal mass subsequently proven to be an inflam-matory pseudotumor of the mesentery, a rare benign mass. This report documents the gallium-avid nature of this rare lesion and discusses associated characteristic linical, path-ologic, and radiographic features. J Nucl Med 1991; 32:1614-1616 I n f lammatory pseudotumor is a rare pediatric abdominal mass with a characteristic clinical presentation (1). We discuss the pertinent clinical, pathologic, and radioiogic features of inflammatory pseudotumor and establish its position among the gallium-avid abdominal masses