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要旨●遺伝学的に確定診断された非特異性多発性小腸潰瘍症45例の臨床像を検討した.本症は女性に多いこと,貧血は必発するが肉眼的血便はほぼみられないこと,炎症所見は比較的低値にとどまること,約30%に血族結婚を認めることが確認された.また,終末回腸を除く回腸を中心に,輪走ないし斜走する比較的浅い開放性潰瘍が腸間膜付着側と無関係に多発することが小腸病変の形態学的特徴と考えられた.性別による比較では,胃病変は女性に有意に多く,ばち指,骨膜症や皮膚肥厚といった肥厚性皮膚骨膜症の所見は男性に有意に多かった.本症の診断に際しては,小腸病変の評価に加えて,上部消化管病変や消化管外徴候の評価,SLCO2A1遺伝子変異の検索も必須と考えられた.
We retrospectively analyzed clinical features of 45 patients with CEAS(chronic enteropathy associated with SLCO2A1 gene). Our results indicate that this condition occurs predominantly in females ; generally, no patient presents with gross hematochezia but they have anemia. It presents with relatively low inflammation, and 30% of patients have parental consanguinity. Based on the morphologic features, small intestinal lesions are considered to be shallow and sharply demarcated multiple ulcers with an asymmetric formation that occurs commonly in the ileum(except the terminal ileum). A comparison of clinical features by sex revealed that gastric involvement occurs more frequently in females, and clinical findings of primary hypertrophic osteoarthropathy, such as digital clubbing, periostosis, and pachydermia, are significantly more frequently observed in males. In addition to endoscopy, a radiographic examination is imperative as the first-choice procedure for the diagnosis of CEAS. Moreover, extraintestinal manifestation and genetic analysis are helpful in diagnosing this disease.
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