Unusual Presentations of Metastatic Prostate Carcinoma as Detected by anti-3 F-18 FACBC PET/CT

Prostate carcinoma is the second most common cause of cancer-related mortality in males in the United States. The pattern of metastatic disease of prostate cancer is well recognized, frequently involving sclerotic bone lesions and abdominopelvic lymph nodes. Anti-3 F-18 FACBC acid is a synthetic amino acid analog positron emission tomography radio-tracer with reported utility in the detection of prostate carcinoma. We present 2 cases of unusual presentations of prostate carcinoma, one with malignant ascites and omental implants and the other with lytic bone lesions detected with anti-3 F-18 FACBC acid.