Management of Early Breast Cancer in Southeast Netherlands Since 1984 A Population-Based Study

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Abstract
We studied changes in staging and treatment of patients with early breast cancer (TNM stage I and II) in eight community hospitals in southeast Netherlands between 1984 and 1991 and related these changes to the guidelines for the management of breast cancer drawn up by the regional Breast Cancer Study Group. Since 1984, the proportion of patients that underwent breast-conserving therapy (local tumour excision, axillary dissection, and irradiation of the breast) increased from 26% to 53%. Although the mean number of axillary lymph nodes examined by the pathologists increased significantly, the proportion of patients with positive lymph nodes remained unchanged. The proportion of patients with involved axillary nodes receiving any form of adjuvant systemic therapy increased from 49% to 82%. Therapeutic policy initially varied significantly from one hospital to another but gradually became more uniform. We conclude that, except for elderly patients, treatment of early breast cancer corresponded increasingly to the guidelines of the regional Breast Cancer Study Group.

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