There was a time in the history of medicine, long before the development of imaging and laboratory diagnostic tools, when physicians relied just on their ability to diagnose a disease by knowing how it looks, how it smells, and the changes it makes in the one who has it. This is the basis of the clinical diagnosis, and even now there are plenty of diseases we can diagnose or at least suspect just by having a quick look at a patient.1
Zamudio Martínez G, Zamudio Martínez A. Tetralogy of Fallot—Report of a Case Diagnosed at a Museum. JAMA Cardiol. 2020;5(5):500–501. doi:10.1001/jamacardio.2020.0033
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