The clinical features of tuberculoma are as follows: 1. more males than females, age less than 40 years old, history of tuberculosis infection and exposure; 2. imaging features, the site is mostly found in the subclavian region, i.e. the posterior segment of the upper lobe of the lung, followed by the dorsal segment of the lower lobe; tuberculoma with a lesion diameter less than 4 cm is mostly rounded, with smooth margins, uniform density, common calcification, surrounding satellite foci adjacent to the pleura thickening, rarely shallow lobulation, sparse The foci larger than 4cm in diameter are mostly shallowly lobulated or irregular in shape, with non-uniform density, smooth margins, calcification, satellite foci, sparse burrs, proximal cavities and slightly low density in the middle, etc. All enhancement scans show envelope strengthening or non-enhancement, and uniform strengthening is rarely seen; 3, pathological anatomical features, pulmonary tuberculoma or tuberculosis ball, in pathology The lobes are formed by the fusion of multiple tuberculosis spheres, and the cavities are formed by the liquefied necrotic material of the cheese in the mass, which is coughing out of the lung along the bronchus, and the calcification is formed by the deposition of necrotic calcium salts of the cheese in the mass, and the pleural enlargement is mostly caused by chronic inflammation with limited pleural hypertrophy and fibrosis.