Clin Endosc.  2011 Dec;44(2):133-136. 10.5946/ce.2011.44.2.133.

Adult Intussusception Caused by an Appendiceal Mucocele and Reduced by Colonoscopy

• Park JK
• Kwon TH
• Kim HK
• Park JB
• Kim K
• Suh JI

• KMID: 1805261
• DOI: http://doi.org/10.5946/ce.2011.44.2.133

Abstract

Appendiceal intussusception is a very rare disease that is found in only 0.01% of patients who have undergone an appendectomy. Clinical symptoms vary but include acute appendicitis symptoms such as right lower quadrant abdominal pain or repetitive right lower quadrant crampy pain. Some patients are asymptomatic. Operative treatment is necessary to reduce an appendiceal intussusception in adults, but there is a debate about how to perform the reduction. Successful colonoscopic reductions have been recently reported for some cases. We report a case of appendiceal intussusception that was diagnosed, reduced by colonoscopy, and histologically confirmed as a mucinous cystadenoma after the operation.

Keyword

Appendiceal intussusception; Colonoscopy; Reduction; Mucinous cystadenoma

MeSH Terms

Abdominal Pain
Adult
Appendectomy
Appendicitis
Colonoscopy
Cystadenoma, Mucinous
Humans
Intussusception
Mucocele
Rare Diseases

Figure

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  Fig. 1 Colonoscopic findings. (A) It shows huge coil-spring reddish polypoid mass which is occupying most of the lumen of the sigmoid colon. (B) The mass is migrated proximally during the air infusion. (C) It shows edematous and erythematous mucosal changes at the ileocecal lesion, and protruding mass is found at the appendiceal orifice.

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  Fig. 2 Abdominal computed tomography finding. It shows wall enhancing cystic lesion at the appendiceal base (arrow).

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  Fig. 3 Colonoscopic finding. It shows slightly improved mucosal lesion.

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  Fig. 4 Microsacopic finding. It shows appendiceal cyst is lined by co-lumnar mucinogenic cells and inflamed wall (H&E stain, ×400).

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