The phrase "untreatable disease" means that there is currently no known cure or effective medical treatment available for that particular illness or condition. Full definition
Pictures like these provide road maps for surgeons, allowing them to use increasingly precise surgical tools to address previously untreatable diseases without damaging surrounding tissue. (discovermagazine.com)
Some of these people have vision problems caused by currently untreatable diseases, he notes, but others simply because they can not afford or do not have access to relatively simple fixes such as surgery to remove cataracts (clouding of eye lenses). (scientificamerican.com)
«It could offer a whole new way to treat this historically untreatable disease.» (sciencedaily.com)