1. From the Departments of Ophthalmology (M.K.Y., S.K.F.) and Radiology (H.R.K.), Massachusetts Eye and Ear, the Departments of Radiology (H.R.K.), Dermatology (A.G.M.), Medicine (M.B.B.), and Pathology (D.G.B.), Massachusetts General Hospital, and the Departments of Radiology (H.R.K.), Dermatology (A.G.M.), Medicine (M.B.B.), and Pathology (D.G.B.), Harvard Medical School — all in Boston.