[Cyst, endometriosis, borderline tumor, CUP : diagnostic stations of a supposedly simple renal cyst]

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A case report describes a female patient whose presumed simple renal cyst diagnosis evolved through endometriosis and borderline tumor stages to an unknown primary cancer, highlighting diagnostic complexity.

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Abstract

Symptomatic renal cysts are not uncommon and can be treated by puncture, sclerotherapy, or laparoscopic fenestration. We report the case of a female patient in whom the diagnosis of a supposedly simple symptomatic renal cyst changed over endometriosis and borderline malignancy to a CUP. This case shows that in spite of all diagnostic measures and care the final diagnosis can be a surprise.

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Condition tags

endometriosis

MeSH descriptors

Adenocarcinoma Adenocarcinoma Endometriosis Kidney Diseases, Cystic Kidney Neoplasms Kidney Neoplasms Neoplasms, Unknown Primary Adenocarcinoma Diagnosis, Differential Endometriosis Female Humans Kidney Diseases, Cystic Kidney Neoplasms Middle Aged Neoplasms, Unknown Primary

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Source provenance

europepmc
last seen: 2026-09-27T09:11:36.575535+00:00
pubmed
last seen: 2026-05-13T22:17:00.782903+00:00
unpaywall
last seen: 2026-09-28T06:20:55.906821+00:00
License: public-domain-us · commercial use OK · attribution required
Courtesy of the U.S. National Library of Medicine