Primary extragonadal germ cell tumors are rare, and 60% of such cases are seminomas. While the tumors can occur in the mediastinum, thymus, retroperitoneal organs and pineal gland, seminoma originating in the prostate tissue is extremely rare. The present study reports the case of a 54-year-old male with prostate seminoma. The patient was followed up at the First Affiliated Hospital of Dalian Medical University (Dalian, Liaoning, China) from 2001 onwards. The patient received chemotherapy with cyclophosphamide following total resection of the pelvic organs, pelvic lymph node dissection, continent detenial cecum-ascending colic bladder and orchidectomy. The patient experienced considerable post-operative quality of life for >10 years and the disease did not reappear. The study indicated that extragonadal seminoma is sensitive to chemotherapy, and that radical surgery and post-operative adjuvant chemotherapy with cyclophosphamide is a reasonable and feasible treatment method.
Keywords: chemotherapy; cyclophosphamide; germ cell tumor; prostate cancer; seminoma.