Abstract
A 25-year-old man visited our hospital with a mass in his left testis. He then underwent a radical orchiectomy under the diagnosis of testicular tumor. Pathological diagnosis was choriocarcinoma and embryonal cell carcinoma. Postoperative serum α-fetoprotein and HCG returned rapidly to normal and there were no evidences of metastases by chest X-ray film, IVP, lymphography, US and CT. Based on these findings, diagnosis of stage I non-seminomatous germ cell testicular tumor was made and he was kept under medical treatment, adopting “watch and see policy”. Contrary to our expectation, the disease relapsed as retroperitoneal lymphadenopathy 4 months after the orchiectomy. However, the patient was treated by retroperitoneal lymphnode dissection (RPLND) combined with chemotherapy. At 6 months after RPLND, he is well and has no evidence of the disease.