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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:Myelin tomacula
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Accession:HP:0030175 term browser browse the term
Definition:The presence of multiple sausage-shaped swellings of the myelin sheath (The Latin tomaculum means sausage).
Comment:Several mechanisms that may lead to the formation of a tomaculum-for example, hypermyelination, redundant loop formation, the presence of a second mesaxon, transnodal myelination, two Schwann cells forming one myelin sheath, and disruption of the myelin sheath. Sural nerve biopsies typically show regions of myelin thickening as well as features of demyelination and remyelination.
Synonyms:exact_synonym: Tomacula
 xref: UMLS:C4020904


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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system morphology 0
          Abnormal myelination 0
            Abnormal peripheral myelination 0
              Peripheral hypermyelination 0
                Myelin tomacula 0
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