Narod SA. Tamoxifen ChemopreventionâEnd of the Road?. JAMA Oncol. 2015;1(8):1033â1034. doi:10.1001/jamaoncol.2015.2247. Download citation file:
About Rare Diseases. A rare disease is defined by the European Union as one that affects less than 5 in 10,000 of the general population. There are between 6,000 and 8,000 known rare diseases. Around five new rare diseases are described in medical literature each week.
Organic or pathological disease are terms used to describe more advanced stages of disease that are accompanied by physical, cellular changes that can be identified by diagnostic testing. Examples of organic diseases include cancer, arthritis, heart disease, gastric ulcers, and emphysema. Too often, diseases are diagnosed when they are more advanced, end-stage organic diseases.