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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:Ewing sarcoma
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Accession:HP:0012254 term browser browse the term
Definition:A malignant tumor of the bone which always arises in the medullary tissue, occurring more often in cylindrical bones.
Comment:Histologically, Ewing's sarcoma is composed of a homogeneous population of small round cells with high nuclear to cytoplasmic ratios that are arrayed in sheets. There is scant cytoplasms, which is pale, vacuolated and characterized by faded boundaries. In contrast, the nuclei are clearly visualized by their intense color. Mitotic activity is typically low.
Synonyms:exact_synonym: Ewing's sarcoma
 xref: EFO:0000174;   SNOMEDCT_US:76909002;   UMLS:C0553580


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  Human phenotype 0
    Phenotypic abnormality 0
      Neoplasm 0
        Neoplasm by histology 0
          Sarcoma 0
            Ewing sarcoma 0
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