1. From the Department of Radiology, UCSD Medical Center, San Diego, Calif (E.S., M.N.P.); Department of Radiology, Philippine Orthopedic Center, Quezon City, Maria Clara Street, Santa Mesa Heights, Quezon City, Metro Manila, Philippines 1100 (D.V.F.); and Department of Radiology, Hospital Pablo Tobón Uribe, Medellín, Colombia (C.M.G.).