TY - JOUR
T1 - Clinicopathological features of young patients (<35 years of age) with breast cancer in a Japanese Breast Cancer Society supported study
AU - Kataoka, Akemi
AU - Tokunaga, Eriko
AU - Masuda, Norikazu
AU - Shien, Tadahiko
AU - Kawabata, Kimiko
AU - Miyashita, Mika
N1 - Funding Information:
We wish to thank Mr. Naohito Fukui, the NPO Japan Clinical Research Support Unit staff and the Japanese Breast Cancer Society for their collaboration on this study and their ongoing development, maintenance and improvement of this registry. This work was supported by a research fund from the Japanese Breast Cancer Society.
Publisher Copyright:
© 2013, The Japanese Breast Cancer Society.
PY - 2014/11
Y1 - 2014/11
N2 - Results: The numbers of young and non-young patients were 2,982 (2.7 %) and 106,295 (97.0 %), respectively. The young patients had more cases of a familial history of breast cancer, more subjective symptoms, fewer bilateral tumors, lower BMIs, larger tumors, more positive lymph nodes, fewer instances of an ER-positive status, more instances of an HER2-positive status, more triple-negative tumors and more advanced TNM stages. The young patients more frequently received neoadjuvant chemotherapy and breast-conserving therapy (BCT) compared with the non-young patients. Eighty percent of all patients received adjuvant therapy. The young patients were more frequently treated with chemotherapy, molecular targeted therapy and radiation therapy than the non-young patients.Conclusions: In this study, young patients with breast cancer were diagnosed at more advanced stages and had more endocrine-unresponsive tumors than non-young patients. Further prognostic analyses should be conducted in this cohort.Methods: The clinicopathological characteristics were compared between young (<35) patients and non-young (≥35) patients among 109,617 records registered between 2004 and 2009.Background: To clarify the clinicopathological features of breast cancer in young females, surveillance data of the Registration Committee of the Japanese Breast Cancer Society were analyzed.
AB - Results: The numbers of young and non-young patients were 2,982 (2.7 %) and 106,295 (97.0 %), respectively. The young patients had more cases of a familial history of breast cancer, more subjective symptoms, fewer bilateral tumors, lower BMIs, larger tumors, more positive lymph nodes, fewer instances of an ER-positive status, more instances of an HER2-positive status, more triple-negative tumors and more advanced TNM stages. The young patients more frequently received neoadjuvant chemotherapy and breast-conserving therapy (BCT) compared with the non-young patients. Eighty percent of all patients received adjuvant therapy. The young patients were more frequently treated with chemotherapy, molecular targeted therapy and radiation therapy than the non-young patients.Conclusions: In this study, young patients with breast cancer were diagnosed at more advanced stages and had more endocrine-unresponsive tumors than non-young patients. Further prognostic analyses should be conducted in this cohort.Methods: The clinicopathological characteristics were compared between young (<35) patients and non-young (≥35) patients among 109,617 records registered between 2004 and 2009.Background: To clarify the clinicopathological features of breast cancer in young females, surveillance data of the Registration Committee of the Japanese Breast Cancer Society were analyzed.
KW - Breast cancer in young females
KW - Surveillance data
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U2 - 10.1007/s12282-013-0466-2
DO - 10.1007/s12282-013-0466-2
M3 - Review article
C2 - 23588791
AN - SCOPUS:84875984614
VL - 21
SP - 643
EP - 650
JO - Breast Cancer
JF - Breast Cancer
SN - 1340-6868
IS - 6
ER -