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Updated: Aug 8, 2025

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Published on: June 21, 2024
Incidental contrast opacification of the appendix secondary to urological intervention
Samuel Hunn, Joshua Winston1, Nicholas Davies1
114 Jutland St, New Town, Hobart, Tasmania 7008, Australia.
Abstract:
A 23-year-old otherwise well male, with right ureteric stent in situ placed electively for a 9-mm symptomatic pelviureteric junction stone underwent a right ureteropyeloscopy, retrograde pyelogram laser lithotripsy and stent exchange for stone clearance. The procedure was uncomplicated. Following stent removal on day 2, the patient developed acute right lower quadrant pain, which was investigated with non-contrast CT abdomen. The scan demonstrated a contrast-filled vermiform appendix, secondary to vicarious contrast excretion. This case report describes a rare manifestation of vicarious contrast excretion and explains this phenomenon.
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