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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:Smooth tongue
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Accession:HP:0010298 term browser browse the term
Definition:Glossy appearance of the entire tongue surface.
Comment:This is due to reduction in number and/or size of the filiform papillae. A geographic tongue has localized areas of smoothening, but not sufficient to warrant use of the term Smooth tongue.
Synonyms:exact_synonym: Smooth lingual surface;   Smooth surface of tongue
 narrow_synonym: Smooth dorsum of tongue
 related_synonym: Atrophy of dorsum of tongue;   Atrophy of lingual surface;   Atrophy of tongue surface
 xref: SNOMEDCT_US:9491003;   UMLS:C0155964;   UMLS:C4280381;   UMLS:C4280382;   UMLS:C4280383

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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of head or neck 0
        Abnormality of the head 0
          Abnormality of the face 0
            Abnormality of the mouth 0
              Abnormal oral morphology 0
                Abnormal oral cavity morphology 0
                  Abnormality of the tongue 0
                    Abnormal tongue morphology 0
                      Smooth tongue 0
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