Case 16-2012: A 32-Year-Old Woman with HER2-Positive Breast Cancer

From the Division of Hematology– Oncology (J.B.) and the Departments of Surgery (B.L.S.), Radiology (E.A.R.), and Pathology (A.B.), Massachusetts General Hospital; and the Departments of Medicine (J.B.), Surgery (B.L.S.), Radiology (E.A.R.), and Pathology (A.B.), Harvard Medical School — both in Boston. N Engl J Med 2012;366:2018-26.