1. Department of Pathology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, R. 0. C
2. Department of Radiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, R. 0. C
3. Department of General Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan, R. 0. C. Reprint requests: Chuen Hsueh, MD, Department of Pathology, Chang Gung Memorial Hospital, 5 Fu Shin Street, Kweishan, Taoyuan, Taiwan, R.O.C