[Evaluation of infants and younger children passive smoking at home and prevalence of their lower respiratory tract infectious].

The nicotine's metabolites were determined in urine of 92 children--59 children of smoking parents (SP) and 33 of non-smoking parents (NSP). The level of metabolites of nicotine and the ratio of the nicotine's metabolites to creatinine concentration were analyzed in infants (older than 5 months) and children 2-4 years old. Moreover the frequency of bronchitis and pneumonia in children was estimated on the basis of the interview with their parents.

[Two cases of bronchial tuberculosis--diagnostic difficulties].

We present two cases of bronchial tuberculosis. The first one, man aged 45, showed diffuse necrotic changes in bronchoscopic picture described histologically as coagulative necrosis. AFB were not found in sputum smear but only in the cultures.

[A case of Reye's syndrome].

A case of Reye's syndrome was observed in a girl aged 4 years. The diagnosis was based on clinical findings and diagnostic procedures. The diagnostic difficulties in the initial stage of the disease are stressed.