title: Renal endometriosis tends to be misdiagnosed as renal tumor: a rare case report.
abstract: Renal endometriosis is a rare disease for which the mechanisms of pathogenesis are still unclear. As such, early diagnosis and an appropriate treatment are often delayed because of the tendency to be misdiagnosed as a renal tumor. In October 2013 we performed a radical nephrectomy for a 37-year-old woman with renal endometriosis who was preoperatively misdiagnosed as having a right renal tumor. Avoiding the misdiagnosis of renal endometriosis requires a detailed case history, especially regarding whether the cyclicity of lumbodorsal pain and hematuria correlates with patients' menstrual cycles. Imaging examinations are commonly helpful for localization, whereas relieving symptoms with drugs to create a hypoestrogenic state is useful for clinical diagnosis. However, a final diagnosis for renal endometriosis still must depend on histopathologic examination.
authors.affiliation: 1 Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Ri-jin
authors.initials: RJ
authors.lastname: Song
authors.forename: Chen
authors.initials: C
authors.lastname: Xu
authors.forename: Shi-qing
authors.initials: SQ
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000328:Adult; D003951:Diagnostic Errors; D004715:Endometriosis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D007680:Kidney Neoplasms / Q000175:diagnosis*; D009392:Nephrectomy
keywords: Misdiagnosis; Radical nephrectomy; Renal endometriosis; Renal tumor