Paediatric Tuberculosis at a Referral Hospital in Istanbul: Analysis of 250 Cases.

Background. Tuberculosis (TB) still remains a growing public health problem globally. TB in children is often diagnosed clinically. Methods. We conducted a retrospective chart review of children with TB from November 2004 through December 2010 to determine the appropriateness of using contact history and diagnostic testing. Results. A total of 250 children with TB were identified. One hundred and sixty-two children had only pulmonary disease while 39 had features of both extrapulmonary and pulmonary TB. Mean age was 7.8 years. Thirty-six patients had known contacts. The index case/cases were first-degree relatives in 75%. Sixteen patients who were symptomless were yielded by contact investigation of newly identified TB cases. Tuberculin skin test positivity was 53.3%. Acid-fast bacilli smear positivity was 13.1%, and culture positivity was 18.7%. Twenty-six patients had histopathology of nonrespiratory specimens (lymph nodes and other tissues) showing granulomatous inflammation and caseous necrosis consistent with TB. Conclusions. Presence of contact history directed us to search for TB in children with nonspecific symptoms even if physical examinations were normal. Some children who were close contacts to TB cases were identified to have TB before development of symptoms.