We report the clinical characteristics and treatment of local breast r
elapse in our breast cancer patients who were initially managed with b
reast conservation surgery (lumpectomy) alone. A retrospective study w
as conducted of 366 patients who were treated since 1977. The clinical
, pathological, and treatment data regarding the primary tumor and the
recurrences (91) were reviewed. The actuarial rate of local breast re
lapse in this group was 31% at 10 years. Breast relapse was significan
tly less in those patients 65 years old or greater. Acceptable treatme
nt of the breast relapse included total mastectomy or repeat lumpectom
y plus radiotherapy. Most relapses were small and occurred in the same
area as the original tumor and had similar histology and estrogen and
progesterone receptor values. About one-third of patients will have i
solated relapses after conservation surgery alone, but in the older ag
e group, isolated breast relapse occurs less frequently. The recurrenc
es are usually surgically resectable, and acceptable results can be ac
hieved with salvage surgery.