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.
An aspergillosis that presents as a clump of tangled mass of Aspergillus fungus fibres, blood clots, and white blood cells, which exists in the cavities of the lungs that develop in an area of previous lung disease or lung scarring. (DO)