DOI: 10.36347/sjmcr.2014.v02i09.010

Pages: 609-611

Primary retroperitoneal tumours of mucinous type are very rare and are further sub-divided into benign borderline and cystadenocarcinoma. Diagnosis of retroperitoneal tumours should not be delayed as the majority are malignant. We describe a case of 40 years old female who presented with complain of painless left side flank swelling from last 3 months. Her transvaginal ultrasonography revealed a large well marginated cystic lesion in supraumbilical region and left hypochondrium with CT abdomen further defining the lesion. Wide local excision of the cyst was done under GA. The histological diagnosis was confirmed as primary retroperitoneal mucinous cystadenoma (PRMC). In conclusion Primary retroperitoneal mucinous cystadenoma are rare, before diagnosis carefully search for ovary or other site and excision as early as possible because can be transformed in to malignancy.