Source:http://linkedlifedata.com/resource/umls/id/C0005694
MSH: Blocked urine flow through the bladder neck, the narrow internal urethral opening at the base of the URINARY BLADDER. Narrowing or strictures of the URETHRA can be congenital or acquired. It is often observed in males with enlarged PROSTATE glands.,NCI: Blockage of the opening between the bladder and the urethra resulting in the reduction or prevention of the urine flow from the bladder into the urethra.