Renal endometriosis mimicking an angiomyolipoma

Jiang, Yuan‐Hong; Kuo, Hann‐Chorng; Hsu, Yung-Hsiang

doi:10.1016/j.urols.2013.01.001

Cited by 9 publications

(13 citation statements)

References 10 publications

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“…In previously recorded cases, the affected kidneys of patients with renal endometriosis were enlarged, either from a renal mass or from a space-occupying lesion [ 2 – 4 , 8 ]. However, our patient presented with a contracted kidney, which probably resulted from either associated pyelonephritis or endometriosis per se.…”

Section: Discussionmentioning

confidence: 99%

“…Renal endometriosis is an extremely rare condition with less than 25 cases reported previously to our knowledge. It presents with a space occupying lesion in the affected kidney [ 2 – 4 ] and is not a common etiology of atrophic kidney. Herein, we present a case of the renal parenchymal endometriosis in a contracted kidney removed for mal-functioning.…”

Section: Introductionmentioning

confidence: 99%

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Endometriosis in a kidney with focal xanthogranulomatous pyelonephritis and a perinephric abscess

Cheng

Kuo

2015

BMC Res Notes

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BackgroundThe presence of endometriosis in the kidney is extremely rare. We report a case of endometriosis in renal parenchyma incidentally found in a malfunctioning kidney removed because of xanthogranulomatous pyelonephritis.Case presentationA 53-year-old Chinese premenopausal woman presented with intermittent right flank pain for many years. Imaging studies revealed a contracted non-functioning right kidney and a perinephric abscess. The contracted kidney was considered to have resulted from chronic pyelonephritis. The abscess was drained. The patient subsequently underwent a right nephrectomy. Histology revealed endometriosis of renal parenchyma in addition to xanthogranulomatous pyelonephritis and a perinephric abscess. No evidence of endometriosis was identified at the pelvic site. The patient was symptom-free after operation.ConclusionEndometriosis is a common benign condition in women of reproductive age that is characterized by the presence of endometrial glands and stroma outside the uterine cavity, which affects either genital or extragenital sites. Involvement of the urinary tract is rare. Among the urinary tract endometriosis, only a few cases involve the kidney. Renal endometriosis is difficult to diagnose; a final diagnosis relies on the pathohistologic findings. Treatment involves hormonal manipulation or a hysterectomy with bilateral salpingo-oophorectomy. Whether a nephrectomy required depends on the level of renal function. Although extremely rare, renal endometriosis should be part of the differential diagnostic spectrum when a contracted, non-functioning kidney is present. Early diagnosis might have prevented an unnecessary nephrectomy in cases of uncomplicated renal endometriosis.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Endometriosis in a kidney with focal xanthogranulomatous pyelonephritis and a perinephric abscess

Cheng

Kuo

2015

BMC Res Notes

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“…Urinary tract involvement is uncommon and primarily manifests in the bladder, followed by the ureters and kidneys, at a ratio of 40:5:1 (41). Marshall first reported renal endometriosis in 1943 (20), and only 16 pathologically confirmed cases have been reported in the past 30 years (Table 2) (42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56). The median age was 37 years (range, 23-53 years).…”

Section: Discussionmentioning

confidence: 99%

“…Embryonic theories suggest that endometriosis results from metaplastic changes of Wolffian, Mullerian, and occasionally peritoneal (43,44,46,48,50,51,53,54). Immunologic theories suggest that a suboptimal immune response may result in ectopic endometrial implantation (46,(50)(51)(52)(53)(54). In these literatures, Bazaz-Malik et al, Dutta et al, and Cheng et al believe that the pathogenesis of their cases of renal endometriosis is rationally explained by embryonic theory (44,48,53).…”

Section: Discussionmentioning

confidence: 99%

“…Migratory theories propose that retrograde menstruation, lymphovascular metastasis, and direct extension allow the endothelial cells to transplant into ectopic sites ( 46 , 48 , 50 – 54 , 56 , 57 ). Embryonic theories suggest that endometriosis results from metaplastic changes of Wolffian, Mullerian, and occasionally peritoneal (celomic) structures ( 43 , 44 , 46 , 48 , 50 , 51 , 53 , 54 ). Immunologic theories suggest that a suboptimal immune response may result in ectopic endometrial implantation ( 46 , 50 – 54 ).…”

Section: Discussionmentioning

confidence: 99%

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Renal Endometriosis Mimicking Cystic Renal Tumor: Case Report and Literature Review

2021

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Background: Endometriosis mainly affects female pelvic tissues and organs, and the presence of endometriosis in the kidney is extremely rare.Case Presentation: We report a case of a 48-year-old woman who presented with intermittent hematuria. She was found to have a cystic mass on renal ultrasonography, and contrast-enhanced computed tomography (CT) showed slight enhancement of the cystic wall and septa. These findings were indicative of cystic renal tumor. The patient subsequently underwent partial right nephrectomy. Histopathology revealed endometriosis of the right renal parenchyma. The patient recovered well and had no evidence of a recurrent renal mass at the 3 months' follow up.Conclusion: The possibility of renal endometriosis should be considered in a female patient with a cystic renal mass and clinical symptoms related to the menstrual cycle.

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Renal Endometriosis Mimicking a Malignancy—a Rare Case of Reno-Mullerian Fusion?

O'Connor

Byrnes

Walsh

et al. 2021

SN Compr. Clin. Med.

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Endometriosis is a common gynaecological condition characterised by ectopic endometrial tissue growth beyond the uterine cavity. Urinary tract endometriosis represents only 1.2% of all cases, with renal endometriosis accounting for less than 1% of urinary tract involvement. An asymptomatic, 49-year-old, perimenopausal Irish female was found to have an incidental mass at the upper pole of the right kidney on imaging studies. Histological analysis was recommended to outrule a renal malignancy and an open radical nephrectomy was performed following multidisciplinary input. Histological analysis surprisingly revealed the presence of endometriosis and endosalpingiosis, accompanied by a signi cant smooth muscle component, which mimicked a renal neoplasm. The aetiology of renal endometriosis remains unclear. However, given the lack of a history of endometriosis and the absence of other foci of disease in this patient, together with the smooth muscle predominant phenotype, this may represent a case of renomullerian fusion or endometrial displacement during gestational development. Keywords Endometriosis, smooth muscle, reno-mullerian fusion, malignancy

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Renal endometriosis mimicking an angiomyolipoma

Cited by 9 publications

References 10 publications

Endometriosis in a kidney with focal xanthogranulomatous pyelonephritis and a perinephric abscess

Endometriosis in a kidney with focal xanthogranulomatous pyelonephritis and a perinephric abscess

Renal Endometriosis Mimicking Cystic Renal Tumor: Case Report and Literature Review

Renal Endometriosis Mimicking a Malignancy—a Rare Case of Reno-Mullerian Fusion?

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