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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Mitten deformity
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Accession:HP:0004057 term browser browse the term
Definition:Fusion of the hands and feet by a thin membrane of skin (scarring) seen in forms of dystrophic epidermolysis bullosa and leading to a 'mitten' hand deformity.
Comment:Mitten deformity is also referred to as pseudosyndactyly, which should not be confused with true syndactyly (actual and complete fusion of fingers). Antenatally, pseudosyndactyly can be misinterpreted as syndactyly.
Synonyms:exact_synonym: Pseudosyndactyly
 xref: UMLS:C1969236

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of limbs 0
        Abnormality of the upper limb 0
          Abnormality of the hand 0
            Abnormal hand morphology 0
              Mitten deformity 0
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