[The diagnosis of definitive or probable tuberculosis and latent tuberculosis infection in children with suspected tuberculosis].

Pulmonary tuberculosis (Tbc) continues to be an important cause of morbidity in children in our country and in the world. There are diagnostic difficulties in the evaluation of the patients with suspected Tbc. In our study of 118 cases, the signs or symptoms suggestive of pulmonary Tbc have a microbiologically confirmed ratio of 26% within the cases having a positive tuberculin test result or having a contact with an adult that had Tbc. Thirty-one (26%) patients were diagnosed with definite Tbc, 48 (41%) patients with probable Tbc and 28 (24%) patients with latent Tbc infection. The tuberculin test was positive in 22 (71%) patients with definite Tbc and in 29 (60%) patients with probable Tbc. A history of a contact with an adult having Tbc has been observed in 18 (58%) patients in definite Tbc case group, in 23 (48%) patients in probable Tbc case group and in 13 (46%) patients in latent Tbc infection case group. No significant difference has been observed between patients with definite or probable pulmonary Tbc according to the average age, sex, tuberculin test positivity and history of Tbc contact. The most common clinical symptoms that has been observed in both groups were cough, fever and weight loss and the most common radiological finding that has been found in both groups was persistent infiltration. Definite or probable Tbc cases were treated for a period of 6 months with 3 anti-Tbc drugs. There were no patients who had failed to response to the treatment. These results showed that, the diagnostic criteria used for probable pulmonary Tbc are also useful in detecting the patients who should be treated with anti-Tbc drugs.