攝護腺癌在早期大都沒有任何症狀，唯有靠肛門檢查（指檢）、抽血中攝護腺特異性抗原(PSA)或超音波檢查方能早期診斷，攝護腺癌會經由穿透包膜的方式來擴散，侵犯周圍的組織如儲精囊，直腸，鼠蹊部淋巴，及骨頭。晚期前列腺癌常見的骨頭痛往往是來自腫瘤細胞已經轉移到脊椎，骨盆，及肋骨。我們提出一個罕見的病例是在疝氣修補時意外發現攝護腺癌。

Prostate cancer usually causes no symptoms. It is often noticed during a digital rectal examination, or transrectal ultrasound, or when an elevated PSA level is detected. The spread of prostate cancer can be detected by the presence of prostate cancer cells in areas surrounding the prostate, such as the seminal vesicles, lymph nodes in the groin area, the rectum, and pubic bones. Advanced prostate cancer may cause additional symptoms. The most common symptom is bone pain, often in the vertebrae, pelvis, or ribs, from cancer which has spread to these bones. We report an unusual case of metastatic prostate cancer which was found incidentally during repair of an inguinal hernia and highlight the possibility of direct invasion of the peritoneal cavity by prostate cancer cells.