Urethral obstruction from Cobb's collar in association with VACTERL

Abstract

SUMMARY Cobb's collar is a rare intraluminal congenital cause of bulbar urethral obstruction that is commonly mislabelled congenital obstructive posterior urethral membrane (COPUM) but may be distinguished from this endoscopically as it has no connecting folds to the verumontanum. In this report, Cobb's collar is described for the first time in association with the VACTERL syndrome. The abnormality was diagnosed and treated by diathermy and dilatation at the time of endoscopic evaluation, with improvement of vesicoureteric reflux on micturating cystourethrogram and renal ultrasound. Supplementary video available online: http://sajs.redbricklibrary.com/index.php/sajs/article/view/3527 Keywords: Cobb's collar, VACTERL association, posterior urethral valves, Moormann's ring, COPUM