To verify the diagnosis of tuberculosis of the intrathoracic lymph nodes (paraaortal group) in calcination phase in hospital setting using tuberculin diagnosis, tomography, immunological and serological tests, clinical examination, epidemiological history, 70 children aged 3-15 years were examined. It was found that 58.6% of the children had 2-3 signs of tuberculosis activity. Therefore, they need 6-month antituberculous treatment in the sanatorium. 35.7% had no signs of active tuberculosis and can be followed up outpatiently. 5.7% exhibited more than 5 signs of tuberculosis activity and must be treated basically for 8-10 months in hospital.