Meigs` syndrome is a rare clinical condition commonly considered to be associated with malignant ovarian tumour. A case of unmarried female is presented who came with a slowly increasing abdominal mass. Clinical and ultrasonic investigations revealed a mobile, solid right adenexal tumour in the lower abdomen, along with ascites and pleural effusion of the right lung. The level of CA 125 was also raised. Diagnosis of Meigs` syndrome was confirmed after surgical intervention. The tumour was successfully removed and pleural effusion disappeared 15 days after the intervention. Cytomorphologic study of both the tumour and ascitic fluid was negative for malignancy.