False-Positive Cystoscopic Diagnosis of Ureteral Obstruction After Hysterectomy Due to a Nonfunctional Kidney.
BACKGROUND
An estimated 0.2% of the population may have a unilateral nonfunctional kidney. This pre-existing condition may lead to the mistaken presumption that a ureteral injury has occurred when performing cystoscopy after hysterectomy.


METHODS
Two cases are presented in which cystoscopy to confirm ureteral patency after hysterectomy was performed in patients with pre-existing unknown nonfunctional kidneys. These false-positive findings resulted in additional operative time, additional cost, and unnecessary surgical exploration.


CONCLUSIONS
Cystoscopy to confirm ureteral patency after hysterectomy may lead to an incorrect presumption of a ureteral injury in patients with a pre-existing nonfunctional kidney.
Departments of Obstetrics and Gynecology, Urology, and Radiology, Einstein Medical Center, Philadelphia, Pennsylvania.
Kuhali
K
Kundu
Laura
L
Martin
Sean
S
Henderson
Michael
M
Metro
Shuchi
S
Rodgers
Jay
J
Goldberg
D000328:Adult; D003558:Cystoscopy / Q000379:methods*; D003951:Diagnostic Errors; D005189:False Positive Reactions; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007045:Hysterectomy, Vaginal / Q000009:adverse effects* / Q000379:methods; D007431:Intraoperative Complications / Q000175:diagnosis* / Q000601:surgery; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D007889:Leiomyoma / Q000473:pathology / Q000601:surgery; D018570:Risk Assessment; D012494:Sampling Studies; D016896:Treatment Outcome; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D014567:Urography / Q000379:methods; D014594:Uterine Neoplasms / Q000473:pathology / Q000601:surgery