Abstract
Clinical, radiological, and scintigraphic methods were used to assess the response of 30 patients undergoing treatment for advanced mammary cancer. Scintigraphy provided more information than radiology in 13 patients. In 2 patients scintigraphy indicated that sclerotic metastases which had not altered radiologically following treatment were probably ‘healing’. In another 4 patients who developed apparently ‘new’ sclerotic metastases on serial radiographs the scintigrams indicated that these lesions probably represented ‘healing’ of lesions which had been too small for identification on the original radiographs.