右側結腸（A：上行結腸，C：盲腸）は図６で盲端になり，図２から回腸末端（TI）は始まる．回腸末端を正確に追跡すると，図５の１〜図６の４が虫垂であることが明確になる．長さは約3cmと短い（図A：切除標本）が，外径6mm以上に腫大し，図７と図８で周囲脂肪組織の濃度上昇を認め（△），急性虫垂炎と診断できる．病理：phlegmonous appendicitis

文献考察：造影CTは急性虫垂炎の診断・治療計画に極めて有用．
Clin Radiol. 2002 Jun;57(6):507-13.
Effect of contrast-enhanced computed tomography on diagnosis and management of acute abdomen in adults.
Tsushima Y, Yamada S, Aoki J, Motojima T, Endo K.

AIM: To determine the impact of computed tomography (CT) on the diagnosis and treatment plan in patients with acute abdominal pain. MATERIALS AND METHODS: A prospective study was undertaken in 125 adult patients presenting with acute abdominal pain (74 men and 51 women; 40.2 +/- 19.3 years; range, 18-92). Changes in diagnosis, gain in percentage diagnostic certainty and changes of treatment plan of the surgeons in the emergency department before and after CT were evaluated. Pre- and post-CT diagnoses were compared with the final diagnoses. RESULTS: CT findings changed the initial diagnosis in 40 (32.0%) patients. The diagnostic certainty was 58.3 +/- 22.9% before CT, and its gain after CT was 21.9 +/- 18.5 points (P