1. Department of Radiology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Jeollanam-do 519-763, Korea.
2. Department of Radiology, Chonnam National University Hospital, Chonnam National University Medical School, Gwang-ju 501-746, Korea.
3. Department of Pathology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Jeollanam-do 519-763, Korea.
4. Department of Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Jeollanam-do 519-763, Korea.