title: Clinicopathological characteristics of mucinous carcinoma of the breast in Korea: comparison with invasive ductal carcinoma-not otherwise specified.
abstract: Clinicopathological characteristics and prognostic factors of mucinous carcinoma (MC) were compared with invasive ductal carcinoma-not otherwise specified (IDC-NOS). Clinicopathological characteristics and survivals of 104 MC patients were retrospectively reviewed and compared with those of 3,936 IDC-NOS. The median age at diagnosis was 45 yr in MC and 47 yr in IDC-NOS, respectively. The sensitivity of mammography and sonography for pure MC were 76.5% and 94.7%, respectively. MC showed favorable characteristics including less involvement of lymph node, lower stage, more expression of estrogen receptors, less HER-2 overexpression and differentiated grade, and better 10-yr disease-free survival (DFS) and overall survival (OS) (86.1% and 86.3%, respectively) than IDC-NOS (74.7% and 74.9%, respectively). Ten-year DFS of pure and mixed type was 90.2% and 68.8%, respectively. Nodal status and stage were statistically significant factors for survival. MC in Koreans showed similar features to Western populations except for a younger age of onset than in IDC-NOS. Since only pure MC showed better prognosis than IDC-NOS, it is important to differentiate mixed MC from pure MC. Middle-aged Korean women presenting breast symptoms should be examined carefully and evaluated with an appropriate diagnostic work-up because some patients present radiologically benign-like lesions.
authors.affiliation: Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Seho
authors.initials: S
authors.lastname: Park
authors.forename: Jaseung
authors.initials: J
authors.lastname: Koo
authors.forename: Joo-Hee
authors.initials: JH
authors.lastname: Kim
authors.forename: Woo Ick
authors.initials: WI
authors.lastname: Yang
authors.forename: Byeong-Woo
authors.initials: BW
authors.lastname: Park
authors.forename: Kyong Sik
authors.initials: KS
authors.lastname: Lee
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000175:diagnosis / Q000235:genetics / Q000473:pathology*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000145:classification / Q000175:diagnosis / Q000235:genetics / Q000473:pathology*; D044584:Carcinoma, Ductal / Q000175:diagnosis / Q000235:genetics / Q000473:pathology*; D018572:Disease-Free Survival; D005260:Female; D018734:Genes, erbB-2; D006801:Humans; D007723:Korea; D008207:Lymphatic Metastasis; D008327:Mammography; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D015996:Survival Rate; D055815:Young Adult