Visualization of the Stomach on Rhenium-186 HEDP Imaging After Therapy for Metastasized Prostate Carcinoma

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Abstract
Post-therapeutic rhenium-186 HEDP scintigraphy revealed unexpected tracer uptake in the stomach of a 69-year-old man with prostate carcinoma. Because serum calcium and phosphate values were normal and bone scintigraphy showed no abnormal soft tissue uptake, microcalcifications in the stomach are unlikely to explain the abnormal tracer uptake. More likely, because visualization of the stomach is usually a result of trapping of free pertechnetate and because both rhenium and technetium are group VII metals, this finding was attributed to trapping of free perrhenate.