Hwan Jun Choi1, Kyu Hwa Jung1, Jee Hye Lee2. 1. Department of Pathology, Soonchunhyang Cheonan University Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea. 2. Department of Plastic and Reconstrucive Surgery, Soonchunhyang Cheonan University Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea.