Endometriosis in an ectopic kidney: a rare case report and literature review

Abstract Background Endometriosis mainly occurs in female pelvic organs. Endometriosis in the kidney is extremely rare. Case presentation We herein describe a case of a 19-year-old girl with occasional mild abdominal pain associated with an ectopic left kidney. SPECT-CT showed no abnormal radioactive distribution in the left pelvis, suggesting loss of function of the ectopic kidney. 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.