Intense Axillary Accumulation of 99m Tc-MDP Due to Perspiration.

Prostate cancer was newly diagnosed in a 73-year-old man. He underwent bone scintigraphy to assess any skeletal involvement. No abnormal uptake was observed in the skeletal system, whereas intense radioactivity was seen in the bilateral axillary regions. Physical examination found large amounts of sweat. Repeat images revealed no axillary activity after washing. This case illustrated axillary accumulation of 99m Tc-MDP due to perspiration.