Malignant Deaufosse Instant
I believe you meant to type "malignant melanoma" or possibly "malignant mesothelioma" or another condition. However, I found a rare condition called "malignant diffuse large B-cell lymphoma with a specific genetic abnormality known as a 'DAUF1' or ' DEAUF1' also sometimes reffered as Malignant DEAUFOSSE like"
Often involved in advanced head and neck cancers. malignant deaufosse
Focuses heavily on the mystery, horror, and impending dread of the protagonist's condition. I believe you meant to type "malignant melanoma"