Primary retroperitoneal mucinous cystadenomas are extremely rare.They are unattached to the ovary and found almost exclusively in women.

• 摘要原发性后腹膜腔黏液性囊腺瘤病例甚为罕见，这类肿瘤的发生原因仍未确定，通常发生在妇女，且与卵巢组织没有关联性。