Renal endometriosis mimicking a renal tumor in a pregnant patient

Umair, Muhammad; Nawaz, Muhammad Asif; Murtaza, Badar; Ali, Adnan H. Muhammed; Khan, Faraz Basharat; Wahab, Aziz ul

doi:10.1016/j.eucr.2020.101374

Cited by 5 publications

(5 citation statements)

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“…Most cases of urinary tract endometriosis involve bladder followed by ureter, renal involvement being extremely rare. [24][25][26][27][28][29][30]. Renal endometriosis may present as flank pain and hematuria like renal neoplasms.…”

Section: Discussionmentioning

confidence: 99%

Mixed Epithelial and Stromal Tumor: A Rare Renal Neoplasm—Case Report with Clinicopathologic Features and Review of the Literature

Tinguria

Chorneyko

2023

Case Reports in Pathology

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Mixed epithelial and stromal tumor (MEST) is a rare benign renal neoplasm composed of epithelial and stromal components. Here, we report a 61-year-old woman presenting with a left complex cystic renal mass. The lesion was found incidentally on ultrasound for abdominal discomfort. CT scan and MRI showed a 7.4 cm complex cystic lesion in the left kidney. The differential diagnoses included complex renal cyst and cystic renal cell carcinoma. Laparoscopic nephrectomy showed a large 7.5 cm multicystic tumor with thick and thin septae and smooth walled-cysts containing clear watery fluid. Histologic examination showed variable sized cysts lined by flattened, cuboidal to columnar epithelium with focal hobnailing. No significant cytologic atypia or mitoses were noted. The cyst lining epithelium was positive for CK7 and high molecular weight cytokeratin (34Be12). The stroma was positive for alpha smooth muscle actin, CD10, estrogen receptor, and progesterone receptor. This report contributes an additional case to our collective knowledge of these lesions and summarizes the literature around these rare neoplasms.

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Section: Discussionmentioning

confidence: 99%

Mixed Epithelial and Stromal Tumor: A Rare Renal Neoplasm—Case Report with Clinicopathologic Features and Review of the Literature

Tinguria

Chorneyko

2023

Case Reports in Pathology

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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%

“…The mechanism of extragenital endometriosis remains controversial. The main theories can be categorized as migratory, embryonic, and immunologic, these theories have been discussed in previous literature ( 43 , 44 , 46 , 48 , 50 – 54 , 56 , 57 ). 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 ).…”

Section: Discussionmentioning

confidence: 99%

“…The main theories can be categorized as migratory, embryonic, and immunologic, these theories have been discussed in previous literature ( 43 , 44 , 46 , 48 , 50 – 54 , 56 , 57 ). 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 ).…”

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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“…Endometriosis is the occurrence, growth, and infiltration of endometrium-like tissue (glands and mesenchyme) in areas other than the endometrium. It may occur anywhere in the body, mainly in the pelvic organs, such as the ovaries ( 8 , 9 ). The incidence of unicornuate uterus with endometriosis on the side of the rudimentary horn is 20~40%.…”

Section: Related Literature Learningmentioning

confidence: 99%

Case report: Rudimentary uterine horn with ovarian endometriosis manifested as pelvic ectopic kidney

et al. 2023

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BackgroundUnicornuate uterus is a congenital uterine malformation. Unicornuate uterus with rudimentary horn, ovarian endometriosis, and congenital renal agenesis are rare combinations that can be easily misdiagnosed due to the lack of typical clinical manifestations.Case summaryA 19-year-old woman with pelvic pain was admitted to the hospital after a month. Physical examination was unremarkable. B-ultrasound and CT scan both indicated pelvic ectopic kidney. In addition, renal scintigraphy revealed normal perfusion and function of the right kidney, but the perfusion and function of the left kidney were not visible. A left pelvic ectopic kidney was diagnosed by preoperative images. A laparoscopic left pelvic ectopic nephrectomy was performed after adequate surgical preparation. However, the postoperative pathological diagnosis revealed a rudimentary uterine horn with ovarian endometriosis and congenital renal agenesis. Fortunately, she got recovered and was discharged from the hospital after 5 days following the operation. Moreover, she received regular follow-ups at the gynecology clinic. To date, no right adnexal or uterine abnormalities have been detected on ultrasound during the follow-up visits.ConclusionRudimentary uterine horn with ovarian endometriosis and congenital renal agenesis are rare and are easily Misdiagnosed due to the lack of typical clinical manifestations. A gynecological examination is recommended for patients who may have this disease.

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Renal endometriosis mimicking a renal tumor in a pregnant patient

Cited by 5 publications

References 5 publications

Mixed Epithelial and Stromal Tumor: A Rare Renal Neoplasm—Case Report with Clinicopathologic Features and Review of the Literature

Mixed Epithelial and Stromal Tumor: A Rare Renal Neoplasm—Case Report with Clinicopathologic Features and Review of the Literature

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

Case report: Rudimentary uterine horn with ovarian endometriosis manifested as pelvic ectopic kidney

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