Ureteral Obstruction Secondary to an Appendiceal Mucocele: A Case Report and Literature Review

Journal of Endourology Case Reports
Melody DjuimoSero Andonian

Abstract

Background: Ureteral obstruction is rarely caused by extrinsic compression from the appendix. In addition, mucinous neoplasms of the appendix are rare, found incidentally in 0.2%-0.7% of appendectomy specimens. Case Presentation: We present an unusual case of ureteral obstruction caused by a large appendiceal mucocele. An asymptomatic 53-year-old caucasian male patient, known for recurrent nephrolithiasis, was referred for management of bilateral nephrolithiasis. A noncontrast CT scan found an atrophic kidney with an obstructive 1.8 cm right midureteral stone above a 9 × 4.3 cm appendiceal mucocele compressing the right midureter. Although the impacted ureteral stone was extracted with retrograde ureteroscopy and holmium laser lithotripsy, the appendiceal mucocele was resected by laparoscopic appendectomy. Final pathology analysis revealed an unperforated low-grade appendiceal mucinous neoplasm of 13 cm without lymphovascular invasion. Since the whole mucocele was completely excised, it did not require any further follow-up. Postoperative CT scan demonstrated stone-free status on the right side with residual mild right hydroureteronephrosis. A diuretic renal scintigraphy showed a nonobstructed right kidney with a chronically...Continue Reading

References

Nov 25, 2005·International Urology and Nephrology·Pedram IlbeigiHossein Sadeghi-Nejad
Nov 2, 2007·Australasian Radiology·J LeeS J Lee

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