1. From the Departments of Pathology (Drs Gonlusen, Akgun, and Truong) and Medicine (Drs Ertan and Olivero), The Methodist Hospital, and Baylor College of Medicine, Houston Tex; the Department of Pathology, Cukurova University, Adana, Turkey (Dr Gonlusen); and the Department of Patholgy, Ericiyes University, School of Medicine, Keyseri, Turkey (Dr Akgun)