A Mimicker of Metastatic Adenocarcinoma: Ureteral Endometriosis

Ureteral endometriosis is a rare yet important disease that can lead to cause kidney dysfunction due to silent obstruction of the ureter. A 44-year-old hospital worker was discovered to have haematuria. Further examination revealed that she had hydroureteronephrosis due to obstruction at the lower third of her ureter. Diagnosis of ureteral endometriosis is challenging for the pathologists, because of its wide spectrum of morphological variation. Immunohistochemical stains should always be performed to confirm the diagnosis. Early diagnosis can avoid nephrectomy