title: Extraskeletal osteosarcoma in the axilla associated with breast carcinoma.
abstract: A case of extraskeletal osteosarcoma arising in the axilla in a 77-year-old woman is described. Because of its association with an ipsilateral breast carcinoma, the axillary mass was at first assumed to be a lymph node with metastatic breast carcinoma. The occurrence of extraskeletal osteosarcoma in the axillary is rare and association with breast carcinoma has never, to our knowledge, been described.
authors.affiliation: Department of Surgery, Kyushu University, Beppu, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Watanabe
authors.forename: H
authors.initials: H
authors.lastname: Inoue
authors.forename: T
authors.initials: T
authors.lastname: Akiyoshi
mesh_terms: D000368:Aged; D001365:Axilla; D001943:Breast Neoplasms / Q000175:diagnosis*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis / Q000175:diagnosis; D009378:Neoplasms, Multiple Primary; D012516:Osteosarcoma; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*