A case of intraperitoneal testicular cancer with ascites.

We report an initial case of intraperitoneal testicular cancer with ascites. Although the cytology of aspirated ascites revealed no tumor cells, the beta-HCG and AFP values were high. Preoperative cisplatin-based combination chemotherapy was used without any pathological diagnosis. Following 2 cycles of chemotherapy, the beta-HCG and AFP values normalized. Furthermore, no ascites was observed on CT scan. Although an accurate histological diagnosis was not established before treatment, it was thought that the ascites originated from the disseminated testicular cancer cells in the peritoneum.