Ring-like Uptake Pattern of a Skeletal Imaging Agent in a Huge Renal Cell Carcinoma

摘要

A case of huge renal cell carcinoma with localization of a skeletal imaging agent is presented. Two unusual scintigraphic findings of bone agent localization in the tumor were observedcolon; 1) a ring-like configuration, and 2) low-intensity uptake. The large ring-like appearance of the extraosseous radioactivity may reflect a bulky tumor with central necrosis and a less active calcification process.