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Updated: Aug 17, 2026

Murine Ileocolic Bowel Resection with Primary Anastomosis
Published on: October 29, 2014
[Ileocecal invagination of a mucocele of the appendix]
History And Clinical Findings:
A 39-year-old patient was admitted because of pain in the right mid and lower abdomen of 2 weeks duration with vomiting and postprandial nausea. He complained of changing stool habits with diarrhoea and constipation. Clinically he showed a slight tenderness in the right lower abdomen.
Investigations:
Routine laboratory test were normal including CRP and WBC. Ultrasound showed a non-compressible mass with low intensity echoes, 3.6 x 4.6 cm in diameter in the right mid abdomen, slightly tender, surrounded by a circular, intestine-like structure. A gastrografin-swallow didn't reveal any obstacle in the proximal small intestine and was inconclusive further distal. A CT scan demonstrated a ileocoecal invagination extending in the colon ascendens to the right flexure with suspicion of a tumor. At the colonoscopy on the next day the invagination was not apparent any more, but a well-rounded tumour in the appendix region was seen.
Diagnosis, Treatment And Course:
Suspecting a coecal tumour with remitting ileocoecal invagination a ileocoecal resection was performed on the third day. The tumour proved to be a mass of mucus with parts of a villo-mucinous cystadenoma of the UMP type. Recovery was uneventful.
Conclusion:
Mucoceles of the appendix can cause ileocoecal invagination in the adult.
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