Ascites following radical hysterectomy with retroperitoneal lymphadenectomy for invasive cervical cancer has been reported previously. Most of these reports described chylous ascites. The chylous ascitic fluid is milky; further, chylous ascites leads to nutritional problems. Authors present the case of a patient who developed serous ascites following radical hysterectomy with bilateral pelvic lymphadenectomy. The amount of ascites was approximately 18,000 ml over 52 days. The patient had no nutritional problems or complications. Although the etiology could not be determined, Authors surmise that the ascites may have been due to massive drainage from injured lymphatic channels below the cisterna chyli. Authors could not found any literatures which described massive serous ascites following surgery in gynecologic malignancy and reports this case with review of literatures.