*Department of Pathology, University of Pittsburgh Medical Center-Presbyterian, Pittsburgh, PA

†Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA

The authors have no funding or conflicts of interest to disclose.

Reprints: N. Paul Ohori, MD, Department of Pathology, A610, UPMC-Presbyterian, 200 Lothrop Street, Pittsburgh, PA 15213 (e-mail: [email protected]).

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