Improvement in the prognosis of Japanese breast cancer patients from 1946 to 2001--an institutional review

Japanese Journal of Clinical Oncology
Masataka YoshimotoGoi Sakamoto

Abstract

Breast cancer has emerged as one of the most frequent malignancies among Japanese women; however, the long-term survival of Japanese breast cancer patients is uncertain. We analyzed the chronological changes in the clinical and pathological characteristics, treatment procedures and the long-term prognosis of 15 416 Japanese women with 16 217 primary breast cancers treated in the Cancer Institute Hospital in Tokyo between 1946 and 2001. Our analysis revealed a chronological increase in the mean patient age, postmenopausal patients and non-invasive carcinomas. Operative procedures became less extensive, with approximately 45% of breast cancer patients in 2000-2001 receiving breast-conserving treatment. Radiotherapy to the regional lymph nodes decreased, while postoperative chemotherapy and hormonal treatments have become more frequent. The survival rate has improved steadily during the past 5 decades. The 10-year crude overall survival rate improved from 61% before 1960 to 83% in the 1990s. The survival rate of Japanese women with breast cancer has dramatically improved during the past 5 decades.

Citations

Jul 25, 2006·Breast Cancer Research and Treatment·Sei Hyun AhnUNKNOWN Korean Breast Cancer Society
Mar 23, 2007·Breast Cancer Research and Treatment·Isabelle SoerjomataramJan Willem W Coebergh
Sep 23, 2008·Breast Cancer : the Journal of the Japanese Breast Cancer Society·Ken YoshidaKeiko Kuriyama
Mar 6, 2010·Breast Cancer : the Journal of the Japanese Breast Cancer Society·Tadahiro NozoeTakahiro Ezaki
Aug 11, 2007·Breast Cancer : the Journal of the Japanese Breast Cancer Society·Tadahiro NozoeKosei Yasumoto
Jan 10, 2014·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·G G SunW N Hu
Apr 17, 2013·Breast Cancer : the Journal of the Japanese Breast Cancer Society·Akemi KataokaMika Miyashita
Mar 23, 2007·European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology·M UenoT Inamoto
Feb 3, 2012·ANZ Journal of Surgery·Leong Ung TiongDavid C A Walsh

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