RESUMO
The incidence of ovarian tumor complicating caesarean section was about 1 in 200 caesarean births while ovarian tumors complicated termination of pregnancy in 1 of 594 procedures. Any type of Ovarian mass can be encountered during pregnancy, but the most common are cystic. Because pregnant women are usually young, malignant tumors are relatively uncommon. A patient third gravida with previous 2 caesarean sections presented in an emergency with complaints of persistent pain in abdomen for last 7 days with gestational age of 35 weeks and 3 days. Emergency Caesarean section was done to deliver an alive male baby of 2.25 Kg with good Apgar score. Intraoperative finding was suggestive of a huge multiloculated left ovarian mass of approximately. 40×30×15 cm weighing 20 Kg with straw coloured mucinous fluid. Up to 3 liters of fl uid aspirated before delivering the cyst out of the abdomen. Left salpingoopherectomy was done and specimen sent for histopathological examination that showed Mucinous cystadenoma of the ovary. Post operative period remain uneventful.