1. Department of Radiology, Cheil General Hospital and Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.
2. Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea.
3. Department of Urology, Cheil General Hospital and Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.
4. Department of Pathology, Cheil General Hospital and Women's Healthcare Center, Dankook University College of Medicine, Seoul, Korea.