[Differential diagnosis of a round infiltrative tubercular focus and pulmonary tuberculoma]

Clinco-roentgenological findings were studied in 110 patients with ovoid tuberculous infiltrations of the lung, and these were compared with analogous observations of 409 pulmonary tuberculomas. Tuberculous infiltration is frequently of an ovoid shape, its greater diameter being directed along the pulmonary pattern, while a portion of its greater diameter being directed along the pulmonary pattern, while a portion of its contour is distinct and spheroid and directed distally. The reliable criterion of a developed tuberculoma is the symptom of flattening and its distinct peripheral contour, which is not infrequently also flattened.