医師国家試験 第111回 問139

救急外来に日本語の話せない68歳の外国人男性が来院した。対応した臨床修練 外国医師が診察と検査を行い記載した診療録の一部を示す。 Presenting complaint: Abdominal pain at the left lower quadrant. History of presenting complaint: Sudden onset of sharp pain at the left lower abdomen 3 days ago. Associated with nausea and chills. Examination: Temperature 37.2°C. No pallor or jaundice. Generalized abdominal distension with abdominal tenderness and localized rebound tenderness at the left lower quadrant. Bowel sounds are reduced. No tenderness or mass on rectal examination. Investigation: WBC count: 11,300/μL, CRP: 9.8mg/dL. CT: multiple small pouches with thickened bowel walls of the sigmoid colon. 診断はどれか。