Hunaina Al-Kindi1, Christopher D M Fletcher2, Yasmeen Khan3. 1. Histopathology Department, Directorate General of Khoula Hospital, Hi Tech Medical Laboratory, Oman. Electronic address: alkindihunaina@hotmail.com. 2. Harvard Medical School, Dana-Farber Cancer Institute, and Anatomic Pathology, Brigham and Women's Hospital, Boston, MA, United States. 3. Al Raffah Hospital, Oman.