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The Roentgenographic Picture in Tuberculosis
Dr. M. de Abreu recently lectured before the Academia Nacional de Medicina on the characteristic roentgenographic picture observed in pulmonary tuberculosis. The lesion of pulmonary tuberculosis, as represented by a spot in the roentgenogram, has a rapid development till it reaches the so-called total limit of volume for the initial period of tuberculosis. Then its development follows one of three forms of evolution: (1) The lesion may continue in a slow development (chronic tuberculosis); (2) the development of the lesion may stop and in this case the spot that represents the lesion has the same size whenever a new picture is taken; (3) the lesion may recede. The spot on the picture then appears smaller and smaller at the following roentgen examinations, till it disappears completely as the lesion is absorbed. In roentgenograms taken of patients with pneumonia it is observed that the lesions in
RIO DE JANEIRO. JAMA. 1930;95(20):1518-1519. doi:10.1001/jama.1930.02720200054022