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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.
Term:Vesicoallantoic abdominal wall defect
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Accession:HP:0030733 term browser browse the term
Definition:An abdominal wall defected related to a developmental anomaly of the allantois, which is an embryonic structure that develops as a diverticulum off the yolk sac at about 16 days post fertilization. During further development, the allantois becomes incorporated into the body of the embryo, connecting the ventral aspect of the urogenital sinus (which will develop into the upper pole of the urinary bladder) to the external portion of the umbilicus. Upon further development, the lumen of the allantois becomes obliterated and forms a thick fibrous cord called the urachus, which connects the apex of the bladder to the umbilicus. In adults, the urachus is known as the median umbilical ligament. Failure of the allantoic cavity to obliterate can result of one of four conditions: 1) congenital patent urachus (a completely open connection between bladder and umbilicus); 2) vesicourachal diverticulum (a diverticulum off the bladder but not communicating with the umbilicus); umbilical cyst and sinus (not communicating with the bladder); and 4) alternating urachal sinus. An abdominal wall defect can be associated with a urachal cyst.
Synonyms:xref: UMLS:C4280796


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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the genitourinary system 0
        Abnormality of the urinary system 0
          Abnormality of the lower urinary tract 0
            Abnormality of the bladder 0
              Abnormal bladder morphology 0
                Abnormality of the urachus 0
                  Vesicoallantoic abdominal wall defect 0
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