図４〜図１１の小腸（△：臍部より尾側にあるからおそらく回腸）は浮腫性壁肥厚を呈している．その背側にある，図４〜図８の管腔臓器↑は図４と図９で盲端になるようで，図７と図８で周囲脂肪組織の濃度上昇があり（▲），憩室炎を疑う．手術で回盲部から40cmの部位で腸間膜対側から起始し，先端が腸間膜に癒着したMeckel憩室炎を認めた（図：白矢印）．病理：Meckel’s diverticulitis，潰瘍と異所性胃粘膜を認める．

文献考察：Meckel憩室炎
１）AJR Am J Roentgenol. 2004 Mar;182(3):625-9.
CT of Meckel's diverticulitis in 11 patients.
Bennett GL, Birnbaum BA, Balthazar EJ.

OBJECTIVE: This study reviews the CT findings of Meckel's diverticulitis in 11 patients and, to our knowledge, represents the largest series of such cases reported to date. CONCLUSION: The inflamed Meckel's diverticulum may be visualized on CT in most patients, appearing as a blind-ending pouch of variable size and mural thickness and containing fluid, air, or particulate material with surrounding mesenteric inflammation. The location of the diverticulum may vary from the right lower quadrant to the mid abdomen, with most cases in this series located near midline. Optimal luminal opacification of the ileocecal bowel with oral contrast material facilitated detection of the diverticulum and also proved invaluable in enabling identification of the normal appendix. The diagnosis is most difficult in the setting of secondary intestinal obstruction.PMID: 14975960
追記：憩室炎の発生機序は，１：急性虫垂炎と同様に頸部で閉塞を起こし，内容物の停滞から細菌感染を惹起する，２：腸石や異物によりビランを形成し感染する，３：異所性胃粘膜からの胃酸とペプシンの分泌による潰瘍からの感染，などが推測される．

２）World J Surg. 1995 Sep-Oct;19(5):734-6; discussion 737.
Meckel's diverticulum in Amsterdam: experience in 136 patients.
Bemelman WA, Hugenholtz E, Heij HA, Wiersma PH, Obertop H.
追記：全合併症の中で憩室炎は16％を占める．