1. From the Departments of Radiology (A.D.B., K.M., H.L.), Gynecology (M.Y.M.), and Surgery (A.M.S.), Kaiser Permanente San Francisco Medical Center, 2425 Geary Blvd, San Francisco, CA 94115; Department of Obstetrics and Gynecology, Kaiser Permanente San Diego Medical Center, San Diego, Calif (J.T.K.); and Department of Urology, Kaiser Permanente San Jose Medical Center, San Jose, Calif (D.R.).