Abstract
Penile metastases from prostate cancer are rare and are usually a manifestation of wide-spread cancer dissemination. Isolated urethral metastases form a small fraction of these cases, have a longer survival rate and may represent spread by implantation following instrumentation. We report a case of prostatic carcinoma presenting with an isolated metastasis to the penile urethra after catheterisation and transurethral prostatectomy. The primary tumor had a prominent intraductal component whose architectural features were mimicked in the metastasis. The possible mechanisms of spread and the diverse appearances of cancer associated with an intraductal component are discussed.
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