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Clinico-pathological survery was made on a series of 46 malignant ovarian tumor operated on at the National Medical Center, Seoul, Korea The results were obtained as follows; 1. The incidence of malignant ovarian tumor among all ovarian tumor was 11.4% 2. Age distribution of malignant ovarian tumor showed the highest frequency between 30-39 years group 3. Twenty one cases (45.6%) of all malignant ovarian tumor had regular menstrual cycle, remaining (19.6%) of them had menstrual disorder to some extent and rest of all (34.8%) had physiological amenorrhea. 4. As to the subjective symptoms of all malignant tumors, palpable mass in the lower abdomen, regardless the presence of ascites was 97.8% lower abdominal pain in 37.1% and G-1 truoble in 30.4% 5. Palpable masses were observed in 89.1% ascites in 63.0% abdominal distension in 39.1% anemia in 15.0% pleural effusion in 13.0% and cachexia in 2.2% on objective findings. 6. Cytological examination with vaginal and cervical discharge, and ascites were positive in 7.1% and 63.6% respectively. the associated malignancy of endometrium was not found by the histopathology of preoperative diagnostic curettage and surgical specimen. 7. The macroscopic and microscopic bilaterality were noted in 34.8% and 45.7% respectively 8. According to the international classification of the clinical stage, stage I was seen in 58.8% stage II 43%, stage III in 13.0% and 23.9% in stage IV, respectively.
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