[Extragonadal germ cell tumor: A case report and review of the literature]

To discuss the clinical diagnosis and treatment of extragonadal germ cell tumor.

We analyzed the clinical data on a case of extragonadal germ cell tumor diagnosed and treated in the General Hospital of Eastern Theater Command and reviewed the relevant literature.

The patient was initially diagnosed with retroperitoneal tumor and treated by resection of the tumor together with the left kidney due to the large volume of the tumor, which was complicated by pancreatic injury. Postoperative pathology showed it to be extragonadal germ cell malignancy. Postoperative examination revealed space-occupying lesion in the left testis, with serum alpha fetoprotein (AFP), human chorionicgonadotropin (hCG) and lactate dehydrogenase (LDH) negative, followed by stage-two resection of the left testis, which was pathologically shown with testicular seminoma. The patient received 7 courses of cisplatin, etoposide bleomycin (PEB) regimen and was followed up for 8 years, which found no recurrence or metastasis, and the patient fathered no child during the postoperative follow-up.

For patients with a history of cryptorchidism and tumors located in the central axis, special attention should be paid to physical examination of the testes, testicular ultrasonography, and determination of AFP and other indicators to identify gonadal tumor metastasis. And if so, radiotherapy and chemotherapy can be considered first to reduce surgical complications and achieve accurate management.