title: Isolated ureteric endometriosis presenting as a ureteric tumor.
abstract: A 32 year old lady presented with recurrent left flank pain for 4 weeks and chronic lower back pain. CT without contrast showed no stones and mild left hydronephrosis. CT of the spine suggested an inflammatory process at L5-S1 vertebra. The diagnosis was supported by a bone scan. Incidentally, the scan showed nonfunctioning left kidney. Diuretic renography confirmed poor perfusion and no excretion. A retrograde study showed narrowing of the ureter at the pelvic brim. Ureteroscopy showed a papillary mass in the lumen of the ureter from which multiple cold cup biopsies were taken. The pathology however was not conclusive. A robotic nephroureterectomy was carried out. Definitive pathology showed intrinsic endometriosis of the ureter. We conclude that endometriosis should be considered in the differential diagnosis of unexplained ureteric obstruction and ureteric lumen filling defects in young women.
authors.affiliation: Department of Urology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Raouf
authors.initials: R
authors.lastname: Seyam
authors.affiliation: Department of Urology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Alaa
authors.initials: A
authors.lastname: Mokhtar
authors.affiliation: Department of Urology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Waleed
authors.initials: W
authors.lastname: Al Taweel
authors.affiliation: Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Al Sayyah
authors.affiliation: Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Asma
authors.initials: A
authors.lastname: Tulbah
authors.affiliation: Department of Urology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.
authors.forename: Waleed
authors.initials: W
authors.lastname: Al Khudair
keywords: Endometriosis; tumor; ureter