PMC6304513_01
CT KUB showing the cystic swelling arising from the appendiceal stump (red arrow).
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fig1
There was a tubular cystic structure in the right flank with inferior tip at the same site of previously inflamed appendix stump base which could represent mucocele of the appendix stump (Figure 1).
Extraluminal compression caused by the mucocele seen during the colonoscopy (white arrows).
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fig2
Patient was then transferred under the care of the general surgery department, where he underwent a colonoscopy which demonstrated an extrinsic compression at the caecum and appendiceal orifice and a smooth pedunculated polyp measuring 10 mm in the sigmoid colon (Figure 2).