RESUMEN
A 45-year-old patient was admitted with history of abdominal pain and distension. Clinically diagnosis was pointing toward a case of right-sided ovarian mass with ascites. Computed tomography (CT) scan of the abdomen was suggestive of mucinous cystadenoma of right ovary with moderate ascites. Ascitic fluid tap was exudative in nature and negative for malignant cells. Blood investigations were within normal limits except for raised CA 125 (more than 1000 mIU/L) and raised erythrocyte sedimentation rate (ESR) (112 mm/h). Our provisional diagnosis was serous cystadenocarcinoma right ovary or pelvic tuberculosis (TB) involving right adnexa and pelvic peritoneum. Ascitic fluid findings were more in favor of pelvic TB, therefore the patient was started on antitubercular treatment (ATT) on trial basis. The patient responded considerably well to ATT.