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要旨 同種造血幹細胞移植後に生じるGVHD(graft-versus-host disease)は,移植特有の合併症である.消化管病変は,主として急性GVHDでみられ,下痢は消化管GVHDのほぼ全例で起こる.消化管での好発部位は,上部では胃,下部では回腸末端~深部結腸とされ,その内視鏡像は,浮腫,発赤,びらん,潰瘍など非特異的であり,内視鏡像のみでの診断には限界がある.前治療の影響や感染症の合併は,より病態を複雑化するため,臨床所見に加え生検による病理診断が重要である.
GVHD(graft-versus-host disease)after alloHSCT(allogeneic hematopoietic stem cell transplantation)is a unique complication. GI(gastrointestinal)-GVHD mainly occurs in acute GVHD, diarrhea is a symptom in most patients. Mucosal injuries are often observed in the stomach, ileum and distal colon, and non-specific findings such as redness, edema, erosion and ulcers are also observed. Because infection and regimen-related toxicity lead to complicated GVHD, pathological diagnosis is very important.
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