SECONDARY LEUKEMIA FOLLOWING ULTRA HIGH-DOSE CHEMOTHERAPY WITH PERIPHERAL BLOOD STEM CELL AUTOTRANSPLANTATION FOR REFRACTORY TESTICULAR CANCER

Abstract

Secondary leukemia following chemotherapy or radiotherapy for mediastinal germ cell tumors in a well-described entity. It also may occur in patients with testicular germ cell tumors.
We report a case of secondary leukemia occurring in a 31-year-old man who received ultra high-dose chemotherapy with peripheral blood stem cell autotransplantation (PBSCT) for a refractory testicular cancer (pathology; Seminoma, Embryonal carcinoma, Yolk sac tumor, Choriocarcinoma) with IIIB2 under Japanese classification, poor-risk group under Indiana classification. The initial levels of serum LDH, AFP and β-HCG were high at 959IU/l, 1, 452ng/ml and 800ng/ml. He received total 11 cycles of systemic chemotherapy (2 cycles of PVB regimen, 4 cycles of PEB regimen, 3 cycles of VIP rigimen and 2 cycles of ultra high-dose chemotherapy with PBSCT for pulmonary and para-aortic lymphnode metantasis following his initial orchiectomy. The total amount of etoposide (VP-16), cisplatin (CDDP), carboplatin (CBDCA) and ifosfamide (IFM), this patient received was 7, 225mg/m², 1, 510mg/m² 1, 750mg/m², and 50.5g. He has survived with CR of disease. Severe and persistent pancytopenia developed 25 months after his initial orchiectomy. Bone marrow examination showed AML (M2 with eosinophilia) under French-America-British (FAB) classification. Therefore, he was diagnosed as secondary leukemia following high-dose chemotherapy. He received total 6 cycles of systematic chemotherapy for the secondary leukemia in the internal department. He is planing to have bone marrow transplantation. To our knowledge, this is the first reported case in the literature relevant to secondary leukemia following ultra high-dose chemotherapy with PBSCT in testicular tumor in Japan.