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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:Spontaneous chorioamniotic separation
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Accession:HP:0025712 term browser browse the term
Definition:Persistence separation of the chorionic and amnionic membranes after the 16th week of gestation (not as a result of a procedure such as amniocentesis).
Comment:The separation of the chorion and amnion before 14 weeks' of gestation is physiologically normal. The amnion and chorion usually fuse between 14 and 16 weeks, and any chorioamniotic separation (CAS) that persists after 16 weeks is uncommon and anomalous. CAS can occur spontaneously or after an intrauterine intervention such as amniocentesis, fetal blood sampling, or fetal surgery.
Synonyms:exact_synonym: Amnion-chorion separation


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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of prenatal development or birth 0
        Abnormalities of placenta or umbilical cord 0
          Abnormal placental membrane morphology 0
            Spontaneous chorioamniotic separation 0
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