To report the case of a huge benign ovarian tumour (Mucinous cystadenoma) in MGM medical college, Aurngabad. Patients: 19 years old female admitted in surgery. METHODS: The information was collected through Clinical examination, Ultrasonography, CT scan, blood investigations & Histopathological study of the specimen. RESULTS: The outcome was large ovarian mucinous cystadenoma. CONCLUSIONS: This case report gives information that although the condition is extremely rare, it is harmful when it's huge if not diagnosed and managed properly. Thogh the tumour is huge it is observed that excion of huge benign ovarian tumour gives good quality outcome to the patient.

Ovarian cysts are common, and are usually less than 4cm. A giant cyst in one which is more than 10cm. Giant cystadenocarcinomas of the ovary are less frequently described. Most of the ovarian carcinomas are of serous type and only 3-4% are of mucinous type. Ovarian mucinous tumors consist of benign, borderline, and carcinomatous tumors. Giant cysts require resection because of compressive symptoms and/or risk of malignancy and their management invariably requires laparotomy to prevent perforation and spillage of the cyst uid into peritoneal cavity. Here, we present a case of an 18 year old female with rapidly progressing abdominal distension and vague abdominal pain. Along with clinical evaluation and lab investigations she was subjected to imaging which included Ultrasonography and MR Imaging. She underwent exploratory laparotomy for excision of the cystic mass. On histopathological examination, mass was found to be mucinous cystadenocarcinoma with low malignant potential. The main aim of this report is to draw attention to huge ovarian epithelial cysts with unsuspected presentation contributing to any underdiagnosis, misdiagnosis, and mismanagement that might occur.