Primary retroperitoneal mucinous tumor of low malignant potential in a Persian woman.

Primary retroperitoneal mucinous tumor (PRMT) of low malignant potential (border line) is an uncommon neoplasm with fewer than 50 reported cases. Uncertain diagnostic imaging results make diagnosis of its origin difficult, preoperatively. Later treatment planning and prognosis would be affected by exact diagnosis of the tumor origin. This study presents a case of Persian woman with diagnostic, histological and immunohistochemical specifications.