[High-dose chemotherapy followed by peripheral blood stem cell transplantation in advanced extragonadal germ cell tumor--a case report].

We reported the experience of high-dose chemotherapy (HDC) combined with peripheral stem cell transplantation (PBSCT) in 29 years-old man with advanced retroperitoneal germ cell tumor accompanied with left supraclavicular lymph node metastases, who obtained complete remission after comprehensive treatment. The initial levels of serum AFP, hCG and beta-hCG were high at 30.2 ng/ml, 14,000 mIU/ml and 66 ng/ml, respectively. After 3 courses of chemotherapy (BEP regimen), while left supraclavicular lymph node swelling was disappeared, the retroperitoneal mass lesion persisted on CT scan. Not all of 3 markers fell to the normal range. After myelosuppressive chemotherapy (etoposide 500 mg/m2 Day 1-3), PBSCs were collected by two consecutive apheresises on Day 17 and 18. In total, 19.5 x 10(6)/kg CD 34 positive cells were obtained. The patient underwent PBSCT (all CD 34 positive cells were infused) on Day 0 following HDC (CBDCA 250 mg/m2/day, etoposide 300 mg/m2/day, IFM 1.5 g/m2/day, Day-7(-)-3, respectively). He became severely leukopenic and thrombopenic with nadir of 200/microliter on Day 6 and 2 x 10(4)/microliter on Day 2, respectively. By administration of platelet transfusion and G-CSF, the white blood cell counts and thrombocyte counts recovered to 6,400/microliter and 4.1 x 10(4)/microliter on Day 10, respectively. Microbiologically enterocolic and respiratory tract infections occurred with elevated body temperature (> 40 degrees C). Antibiotic and antimycotic treatments were continued until disappearance of all clinical and microbiological evidence. He was kept for 10 days in clean room. After HDC, all markers fell to the normal range, but the retroperitoneal residual mass still persisted. Resection of the residual mass and retroperitoneal lymph node dissection were performed with pathological examination revealing tissue necrosis without viable cell. The patient has survived with no sign of the disease for 9 months.