11 September 2026
: Case report 
Appendico-Sigmoid Fistula as a Rare Complication of Chronic or Recurrent Appendicitis: A Case Report
Unusual clinical course, Challenging differential diagnosis, Diagnostic / therapeutic accidents, Management of emergency care, Rare disease, Clinical situation which can not be reproduced for ethical reasons, Rare coexistence of disease or pathology
Shashi Kush AEF 1*, Suvendu Sekhar Jena
AE 1, Amitabh Yadav AE 1, Samiran Nundy AE 1
DOI: 10.12659/AJCR.952691
Am J Case Rep 2026; 27:e952691
Figure 1 (A) Axial computed tomography image showing a fistulous communication between the appendix and sigmoid colon, with a thin streak of rectal contrast entering the appendiceal lumen (green arrow) and the adjacent sigmoid colon (yellow arrow). (B) Coronal computed tomography image showing an inflamed appendix containing an air bubble (blue arrow) in close proximity to the sigmoid colon, with dilated small bowel loops (red arrow).