CT manifestations of tubercular mediastinal lymphadenopathy

A retrospective analysis was done of computerized tomographic (CT) scans of 29 patients with image guided histologically proven mediastinal tubercular lymphadenitis. Amongst these 19 patients were males while 10 were females in the age range of 2-65 years. Plain radiographs of all the patients revealed mediastinal lymphadenopathy. There was a high incidence of involvement of right paratracheal and tracheobronchial lymph nodes. The lymph nodes larger than 2 cm showed central low density area with peripheral enhancing walls. However, nodes less than 2 cm in size were mostly homogenous.