title: [A Case of Pure Type Mucinous Carcinoma Recurrence after Local Control].
abstract: The patient was a 44-year-old woman. Mastectomy and sentinel lymph node biopsy had been performed for carcinoma of the left breast approximately 1 year previously. The diagnosis was mucinous carcinoma, T3N0M0, stage ⅡB, ER(+), PgR(+), HER2 score 0, Ki-67 20%. Hormone therapy was administered postoperatively. Four months after the surgery, left axilla lymphadenopathy was observed. Chemotherapy with EC and nab-PTX was started for the postoperative lymph node recurrence. To achieve local control, axillary lymphadenectomy was performed within 1 year postoperatively, and 1 metastatic lesion in the lymph nodes was observed. Hormone therapy was started sequentially, with no subsequent recurrence or metastasis. Mucinous carcinomas are classified as a breast cancer subtype. Mixed type, including breast ductal carcinoma, form a large proportion of mucinous carcinomas and the therapy for breast ductal carcinoma is usually administered in such cases. Conversely, pure type mucinous carcinomas rarely show metastasis and have a good prognosis. In this case, however, metastasis was noted and chemotherapy was not completely effective, and local control was achieved with surgical resection.
authors.affiliation: Division of Breast and Endocrine Surgery, Dept. of Surgery, Nihon University School of Medicine.
authors.forename: Katsuhisa
authors.initials: K
authors.lastname: Enomoto
authors.forename: Kenichi
authors.initials: K
authors.lastname: Sakurai
authors.forename: Sadao
authors.initials: S
authors.lastname: Amano
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000188:drug therapy* / Q000556:secondary / Q000601:surgery; D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001365:Axilla; D001943:Breast Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery; D005260:Female; D007987:Gonadotropin-Releasing Hormone / Q000037:antagonists & inhibitors; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008408:Mastectomy; D012008:Recurrence; D021701:Sentinel Lymph Node Biopsy; D013629:Tamoxifen / Q000008:administration & dosage
chemical_list: D013629:Tamoxifen; D007987:Gonadotropin-Releasing Hormone