RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A bone cancer that is located_in the area behind the eye and derives_from the orbit or secondarily derives_from an adjacent source (eyelid, paranasal sinus, or intracranial compartment). It results_in the eye pushing forward causing a bulging of the eye called proptosis. (DO)
Synonyms:
exact_synonym:
malignant neoplasm of orbit; neoplasm of orbit proper; orbit cancer; orbital tumor