TY - BOOK AU - Alzeer, Ali Hazem AU - Nellamattathil, Michael AU - Nguyen, Giang-Kim Thi TI - Palpable Lumps after Mastectomy: Radiologic-Pathologic Review of Benign and Malignant Masses SN - 0271-5333 PY - 2021/// KW - IN PROCESS -- NOT YET INDEXED KW - MedStar Washington Hospital Center KW - Pathology Residency KW - Radiology/Diagnostic Residency KW - Journal Article N1 - Available online from MWHC library: 1999 - present N2 - Patients who have undergone mastectomy, with or without reconstruction, are not universally screened with mammography or US. Therefore, clinical breast examination by the physician and patient-detected palpable abnormalities are crucial for detecting breast cancer or recurrence. Diagnostic US is the first-line modality for evaluation of postmastectomy palpable masses, with occasional adjunct use of diagnostic mammography for confirming certain benign masses. In the setting of a negative initial imaging evaluation with continued clinical concern, diagnostic MRI may aid in improving sensitivity. Knowledge of the typical multimodality imaging appearances and locations of malignant palpable abnormalities-such as invasive carcinoma recurrence, cancer in residual breast tissue, radiation-induced sarcoma, and metastatic disease-is crucial in diagnosis and treatment of these entities. In addition, familiarity with the range of benign palpable postmastectomy processes-including fat necrosis, fat graft, seroma, granuloma, neuroma, fibrosis, and infection-may help avoid unnecessary biopsies and reassure patients. The authors review common and rare benign and malignant palpable masses in mastectomy patients, describe multimodality diagnostic imaging evaluation of each entity, review radiologic and pathologic correlation, and acquaint the radiologist with management when these findings are encountered. (c)RSNA, 2021 UR - https://dx.doi.org/10.1148/rg.2021200161 ER -