1. Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan 47392, Korea.
2. Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan 47392, Korea.
3. Department of Radiology, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon 51472, Korea.