James Homer Wright Pathology Laboratories, Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA

The authors have no conflicts of interest to disclose.

Reprints: Kyle M. Devins, MD, James Homer Wright Pathology Laboratories, Department of Pathology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Warren Building, Room 034, Boston, MA 02114 (e-mail: [email protected]).

All figures can be viewed online in color at www.anatomicpathology.com.