Assessing the yield and safety of endoscopy in acute graft-vs-host disease after hematopoietic stem cell transplant

Figure 1 Illustrative images of endoscopic and histopathological views of graft-vs-host disease. A: Colon biopsy revealing mild graft-vs-host disease (GVHD) with few apoptotic bodies; B: Colon biopsy revealing moderate GVHD with all crypts involved; C: Colon biopsy revealing severe GVHD with gland destruction; D: Colonic ulcer without surrounding colitis; E: Rectal erythema and edema; F: Gastric edema and erosion; G: Severe gastritis; H: Severe colitis; I: Severe duodenitis.

Figure 2 Patient selection flow-chart. GVHD: Graft-vs-host disease; HSCT: Hematopoietic stem cell transplant.