[A case of primary malignant neoplasms associated with penile cancer and prostatic cancer].

A case of a 79-year-old man with penile cancer and prostate cancer is reported. The pathological study of surgical specimens disclosed well-differentiated squamous cell carcinoma of the penis and poorly differentiated adenocarcinoma of the prostate. This is a rare case of multiple primary malignant neoplasms associated with penile cancer and prostate cancer.