title: A case of carcinosarcoma of the breast.
abstract: Carcinosarcoma is a rare malignant tumor of the breast. A 59-year-old woman was admitted to our hospital with a complaint of a right breast mass for one month. The mass grew rapidly, and modified radical mastectomy was performed. Based on the histological findings of carcinomatous and sarcomatous components entangled without a transition area, and the results of immunohistochemical staining, carcinosarcoma of the breast was diagnosed. Within 9 months of the surgery, a recurrent lesion appeared in her chest wall. As shown by local resection, this recurrent tumor had only a carcinomatous component. Such tumors are very rare, and there have been no detailed reports of recurrence patterns of carcinosarcoma. Here we report our pathological findings in detail.
authors.affiliation: Department of Breast Pathology, The Cancer Institute, 3-10-16 Ariake, Koto-ku, Tokyo 135-8550, Japan.
authors.forename: Nahomi
authors.initials: N
authors.lastname: Tokudome
authors.forename: Goi
authors.initials: G
authors.lastname: Sakamoto
authors.forename: Takehiko
authors.initials: T
authors.lastname: Sakai
authors.forename: Syuhei
authors.initials: S
authors.lastname: Sarumaru
authors.forename: Naoko
authors.initials: N
authors.lastname: Okuyama
authors.forename: Fumiko
authors.initials: F
authors.lastname: Hori
authors.forename: Rie
authors.initials: R
authors.lastname: Horii
authors.forename: Futoshi
authors.initials: F
authors.lastname: Akiyama
authors.forename: Masahiko
authors.initials: M
authors.lastname: Tanabe
authors.forename: Keita
authors.initials: K
authors.lastname: Saito
authors.forename: Kaoru
authors.initials: K
authors.lastname: Takahashi
authors.forename: Fujio
authors.initials: F
authors.lastname: Kasumi
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology* / Q000628:therapy; D002296:Carcinosarcoma / Q000473:pathology* / Q000628:therapy; D017024:Chemotherapy, Adjuvant; D005260:Female; D006801:Humans; D015411:Mastectomy, Modified Radical; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000628:therapy; D018714:Radiotherapy, Adjuvant