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Article type: Research Article
Authors: Takuwa, Haruko* | Tsuji, Wakako | Yotsumoto, Fumiaki
Affiliations: Department of Breast Surgery, Shiga Medical Center for Adults, 5-4-30 Moriyama, Moriyama-shi, Shiga, 524-8524, Japan
Correspondence: [*] Corresponding author: H. Takuwa. Tel.: +81-77-582-5031; Fax: +81-77-582-5931; E-mail: st24057@yahoo.co.jp
Abstract: BACKGROUND:As the aging population grows, the number of elderly breast cancer patients has rapidly increased especially in Japan; a suitable treatment for elderly patients, considering chronic comorbidities and treatment tolerance, is urgently needed. METHODS:In this retrospective study, 286 elderly breast cancer patients were investigated. Tumor characteristics and survival outcome were compared between 70–79-year-old and ≥ 80-year-old groups. Disease-free survival, overall survival, and breast cancer-specific survival were compared, and the effect of variables was analyzed statistically. For resectable cases, prognoses were compared based on treatment (standard therapy or undertreated). RESULTS:Tumor characteristics were similar between groups, but the Ki-67 labeling index tended to be higher in older patients. Elderly patients with resectable cancer tended to be undertreated. During the median 59-month follow-up period, overall survival was significantly worse in the ≥80-year-old than in the 70–79-year-old group (p < 0.001), but disease-free and breast cancer-specific survivals were equivalent. Recurrence or death event hazard rates tended to be lower in patients receiving standard treatment. CONCLUSIONS:Standard multidisciplinary treatment for breast cancer prevents recurrence and metastasis and tends to extend breast cancer-specific survival even in elderly patients.
Keywords: Breast cancer, comprehensive geriatric assessment, elderly, standard treatment, undertreated
DOI: 10.3233/BD-170280
Journal: Breast Disease, vol. 37, no. 4, pp. 177-183, 2018
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