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

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.