Endometriosis in ectopic kidney: A rare case report and literature review

Menglin Chen, YuanMeng Yu, Xinxiang Zhao
In: Research Square · 2023 · doi:10.21203/rs.3.rs-2571350/v1 · W4322766691
preprint OA: green CC0
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This case report describes the first instance of endometriosis found in an ectopic kidney, identified in a 19-year-old female patient who underwent laparoscopic resection and subsequent histopathological confirmation.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-08 ⓘ

This paper reports a rare case of endometriosis located in an ectopic kidney and provides a literature review of pathologically confirmed renal endometriosis cases identified from PubMed using “renal endometriosis.” A 19-year-old girl with occasional mild abdominal pain and an ectopic left kidney underwent ultrasound, CT, and 99mTc-DTPA renal scanning (which showed no functional uptake on the left), followed by laparoscopic ectopic kidney resection, with histopathology confirming endometriosis characterized by endometrial glands and tubal component. The authors’ review of 17 prior cases (1970–2021) found abdominal pain and gross hematuria as the most frequent symptoms and summarized demographic, lesion size, diagnosis approach, treatment, and outcomes, but the paper’s main limitation is that it is a case report plus retrospective review without prospective comparative methods. This paper is centrally about endometriosis — specifically endometriosis arising in an ectopic kidney.

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Abstract

Abstract Background: Endometriosis mainly occurs in the pelvic tissues and organs of women. Endometriosis in the kidney is extremely rare, and to the best of our knowledge, this article reports the first case of endometriosis in the ectopic kidney. Case presentation: We describe a case of a 19-year-old girl with occasional mild abdominal pain, who was admitted to hospital due to the discovery of an ectopic left kidney. SPECT-CT showed no abnormal radioactive distribution was found in the left pelvis, suggesting that the left ectopic kidney was not functioning. Laparoscopic left ectopic kidney resection was subsequently performed. Histopathology revealed endometriosis of the ectopic left kidney. Conclusions: In female patients with clinical manifestations of abdominal pain and gross hematuria, the possibility of renal endometriosis should be considered.

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Condition tags

endometriosis

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Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (13)

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