title: Retroperitoneal primary mucinous adenocarcinoma with a mural nodule of anaplastic tumor: a case report and literature review.
abstract: A 38-year-old female presented with a lower abdominal mass. During the operation the mass was found to be retroperitoneal and was excised. Gross examination revealed a mucin-containing cystic lesion with a mural nodule. On microscopic examination, the cystic areas were lined by an invasive mucinous adenocarcinoma and the nodule was composed of an anaplastic sarcomatoid tumor that was immunoreactive for cytokeratin. This present case is the 21st example of a retroperitoneal primary mucinous cystadenocarcinoma and the fourth with a mural nodule. Three of four cases with a mural nodule, including our case, had a rapidly fatal outcome.
authors.affiliation: Department of Obstetrics and Gynecology, National Saitama Hospital, Wako, Saitama, Japan.
authors.forename: Mikio
authors.initials: M
authors.lastname: Mikami
authors.forename: Chisei
authors.initials: C
authors.lastname: Tei
authors.forename: Kyoko
authors.initials: K
authors.lastname: Takehara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Komiyama
authors.forename: Atsushi
authors.initials: A
authors.lastname: Suzuki
authors.forename: Takanori
authors.initials: T
authors.lastname: Hirose
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000378:metabolism / Q000473:pathology*; D000328:Adult; D003560:Cysts / Q000473:pathology; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D009378:Neoplasms, Multiple Primary / Q000378:metabolism / Q000473:pathology*; D012186:Retroperitoneal Neoplasms / Q000378:metabolism / Q000473:pathology*; D012509:Sarcoma / Q000378:metabolism / Q000473:pathology*; D013724:Teratoma / Q000473:pathology