"Anton Ghon (1866-1936) was an Austrian pathologist and bacteriologist who spent his life researching tuberculosis and meningitis 3."
"Radiologically, this term is used quite loosely to refer to a calcified granuloma; technically, the Ghon lesion is the initial tuberculous granuloma formed during primary infection and is not radiologically visible unless it calcifies - this occurs in up to 15% of cases 4."