Atresia of the urethra is a rare congenital bladder outlet obstruction, a fetal lower urinary tract obstruction (fetal LUTO), that is usually fatal. Unless there is some other egress for the urine to escape the bladder, such as patent urachus or anuro-rectal communication, these lesions are not compatible with renal development.
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Orphanet:105; atresia of urethra (disease); http://identifiers.org/medgen/576882; http://identifiers.org/snomedct/253902002; http://linkedlifedata.com/resource/umls/id/C0345345; urethral atresia