Ureteral Endometriosis

Hyun Kee Cho, Gwang Woo Lee, Jun Mo Kim, Young Ho Kim, Min Eui Kim
In: Korean Journal of Urology · 2007 · vol. 48(11) , pp. 1179 · doi:10.4111/kju.2007.48.11.1179 · W4240023211
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⚙ AI-generated summary by gemini-2.5-flash-lite+body, 2026-06-13 ⓘ

This case report details a rare instance of ureteral endometriosis, a condition affecting only 0.1% to 0.4% of women with endometriosis, presenting as ureteral stricture with hydroureteronephrosis.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-13 · read from full text ⓘ

This paper describes a single reported case of ureteral endometriosis and reviews its rarity within endometriosis and urinary tract involvement. Using imaging findings (retrograde pyelography suggesting a ureteral stricture with right hydroureteronephrosis) and histology demonstrating endometrial glands and stroma within the ureteral wall, the authors characterize ureteral involvement as a lesion that can mimic external compression or stricture. A major limitation is that the evidence is limited to one case report, without broader population-level analysis. This paper is centrally about endometriosis — specifically ureteral endometriosis presenting as ureteral stricture and hydronephrosis.

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Abstract

Endometriosis is defined as the presence of functional endometrial tissue in an ectopic site. The incidence of endometriosis is from 10% to 20% for women of reproductive age. From 1% to 2% of woman with endometriosis have urinary tract lesions, of which from 70% to 80% involve the bladder. Yet ureteral endometriosis is very uncommon, and it is noted in only 0.1% to 0.4% of these cases. We report here on one case of ureteral endometriosis. Fig. 1 Retrograde pyelography shows abrupt luminal narrowing at the mid-ureter with right hydroureteronephrosis, suggesting ureteral stricture rather than external lesion. Fig. 2 (A) The slide shows ureteral wall thickening and endometriosis on the ureteral wall (H&E, ×100). (B) The slide shows well developed endometrial glands and stroma (H&E, ×400). Fig. 3 Postoperative intravenous pyelography after 1 month shows no hydronephrosis or ureteral obstruction.

References

- Pais VM, Strandhoy JW, Assimos DG. Pathophysiology of urinary tract obstruction. In: Wein AJ, Kavoussi LR, Novick AC, Partin AW, Peters CA, editors. Campbell-Walsh urology. 9th ed. Philadelphia: Saunders; 2007. pp. 1220-1221. - - So YS, Jung DJ, Park HS, Rho J, Kim CS, Jang DS. A case of vesical endometriosis. Korean J Urol 1997;38:434–436. - - Park KS, Lee TY, Woo YN, Kim DH. A case of endometriosis of the ureter. Korean J Urol 1979;20:509–512. - - Slutzky JN, Callahan D. Endometriosis of the ureter can present as renal failure: a case report and review of endometriosis affecting the ureters. J Urol 1983;130:336–337. - - Thomas HS, Stevan B, Nakada SY. Management of upper urinary tract obstruction. In: Wein AJ, Kavoussi LR, Novick AC, Partin AW, Peters CA, editors. Campbell-Walsh urology. 9th ed. Philadelphia: Saunders; 2007. pp. 1255-1267. -

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endometriosis

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