This classic textbook has been updated and revised in a third edition. It remains essentially single authored and as such presents the unique viewpoint of a man who has dedicated his life to the careful and meticulous surgical-pathological study of breast diseases. Haagensen can rightfully claim to have been the first to propose breast self-examination; to suggest that lobular neoplasia wasn't actually carcinoma; to disparage the concept of fibrocystic disease; to classify breast cancers according to size, clinical findings, and nodal status; and to establish a breast unit where statistics and data could be maintained and analyzed (only 13 of his private cancer patients have been lost during follow-up over 47 years). This new edition is the fruit of these labors and as such stands as a powerful tribute to his life's work. Most chapters have been either rewritten or updated to include more follow-up data and many illustrative case