CT of parenchymal and bronchial tuberculosis

Tuberculosis (TB) remains a common disease in the World. Its incidence has risen steadily since 1985, despite a preexisting continuous decreasing its frequency due to an effective chemotherapy. Nonwhite people, socioeconomica lly disadvantaged, chronically debilitated groups and AIDS patients are the most concerned. Chest radiography remains the first imaging modality to ev aluate TB. Widely radio-graphic appearances can be encountered, including n ormal chest X-ray. CT can be useful in all stages of the disease, particula rly when clinical and radiological findings are in disagreement and/or when imaging findings are equivocal. CT should be proposed at the end of an eff ective antituberculous treatment to better subsequently detect fine lesions suggestive of reactivation TB.