AbstractBenign multicystic peritoneal mesothelioma is a rare tumor, common in females and known for recurrence. It is characterized by the formation of multiple, thin-walled cysts that frequently produce large, intra-abdominal masses.Our case is 55 year old female with history of lump in left side of abdomen, of 6 months duration with no history of exposure to asbestos. Ultrasound suggested of a large multicystic lesion in the left lumbar region. CECT suggestive of cystic microadenoma of pancreas. Laparotomy performed to excise the tumour with spleen and histopathology report suggested of benign multicystic peritoneal mesothelioma. Immunopositivity to calretinin and WT-1 suggested of mesothelial cells.
Keywords: Benign multicystic peritoneal mesothelioma; Tail of pancreas; Female.