title: Urachal mucinous tumor of uncertain malignant potential: a case report.
abstract: Urachal mucinous tumor of uncertain malignant potential is very rare and is characterized by a multilocular cyst showing the proliferation of atypical mucin-secreting cells without stromal invasion. As in ovarian and appendiceal borderline tumors, it represents a transitional stage of mucinous carcinogenesis in the urachus. In addition, this tumor may recur locally and develop into pseudomyxoma peritonei. Due to its scarcity and diagnostic challenges, we report a mucinous tumor of uncertain malignant potential arising in the urachus.
authors.affiliation: Department of Pathology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea.
authors.forename: Jung-Woo
authors.initials: JW
authors.lastname: Choi
authors.forename: Ju-Han
authors.initials: JH
authors.lastname: Lee
authors.forename: Young-Sik
authors.initials: YS
authors.lastname: Kim
keywords: Mucinous cystadenoma; Urachus