A case report of Cobb’s collar with posterior urethral valves: a rare entity

Abstract Background Posterior urethral valve (PUV) is a congenital disorder typically presenting in the neonatal period and is associated with the obstruction of the urinary tract. Cobb’s collar is congenital narrowing of bulbar urethra in infants. It can lead to significant morbidity, which may include irreversible renal failure if left untreated. Case presentation A 21-month-old child presented with acute retention of urine and distended lower abdomen. His baseline tests were normal. Ultrasound KUB showed grossly enlarged bladder with almost 1100-ml residual urine. Foley’s catheterization attempted but failed. Urgent cystoscopy was planned where congenital anterior urethral stricture with posterior urethral valves was seen. DVIU done for urethral stricture followed by fulguration of posterior urethral valves. The patient was discharged from hospital the next day. Conclusion A congenital narrowing of the bulbar urethra is uncommon. Though it is rare, it can occur concomitantly with PUV. If this double pathology is missed can result in serious consequences. Children with recurrent urinary tract infections should be ruled out for anterior urethral strictures.