Oat cell carcinoma of lung masquerading as prostatic carcinoma

We believe this is the second case of oat cell carcinoma metastatic to the prostate to be reported. The patient was treated for prostatic carcinoma diagnosed by rectal examination. Subsequent biopsy confirmed oat cell carcinoma and led to the discovery of pulmonary carcinoma. Tumors metastatic to the prostate are rare and are identified when they result in urologic symptoms. A review of tumors metastatic to the prostate is presented.