Acute Graft-Versus-Host Disease of the Large Intestine after Bone Marrow Transplantation
Abstract
Abstract: A 13-year old male with acute lymphocytic leukemia was admitted to our hospital for bone marrow transplantation (BMT). Lower abdominal pain and bloody diarrhea developed during the fourth post-BMT week. Colonoscopy revealed edematous mucosa, erosions and multiple irregular ulcers in the rectum and sigmoid colon. Histologically, multiple apoptotic lesions were recognizable in the crypt basement membrane. Most infiltrating lymphoid cells were mature memory T lymphocytes bearing LFA-la-, CD43 and CD45RO antigens. HLA-DR and ICAM-1 immunostaining was seen on the vascular endothelium and the epithelium stained positively for HLA-DR antigens.