Written by one of the preeminent authorities on breast pathology, this volume addresses the diagnostic challenges of evaluating needle core biopsy specimens. Dr. Rosen offers guidance in interpreting needle core biopsy findings and determining the complete extent of breast disease in the patient. The book discusses common differential diagnostic problems such as reactive changes vs. recurrent carcinoma after lumpectomy; benign sclerosing lesions vs. infiltrating carcinoma; papilloma vs. papillary carcinoma; fibroadenoma vs. cystosarcoma; and atypical duct hyperplasia vs. intraductal carcinoma. More than 900 full-color illustrations depict the entire spectrum of breast pathology seen in needle core biopsies.