Benign multicystic mesothelioma of peritoneum presenting as a tubo-ovarian mass – A case report

Abstract

Multicystic mesothelioma is a rare benign neoplasm of the peritoneum occurring in women of reproductive age. A 45 
year old woman presented with a mass per abdomen measuring 20 x 18 cms2 with on and off pain since 5 months. She 
had a history of five abdominal surgeries in the past. USG and CT scan of the pelvis showed a multicystic mass of 20 
x20 cms2 arising from right adenexal region and a provisional diagnosis of ovarian cystadenocarcinoma was 
suggested. A total abdominal hysterectomy and bilateral salpingo-oophorectomy was done. The specimen showed a 
multilocular cystic mass of 20 x 15 cms2 adherent to the uterus and cervix in the right adenexal area. Histology 
showed cystic spaces lined by cuboidal cells with hobnail appearance. This case is presented for its rarity and its 
relationship with history of previous surgical interventions in abdominal region.