Radiological changes are found at the time of tuberculin conversion in 7-30% of young adults.•Lymphadenopathy. The hilarlymph node was most commonly involved but the paratrachealnode was also frequently enlarged.•Bilateral hilaradenopathymay be seen. In adults the lung component of the primary complex is usually more obvious and the nodal component may not be seen. •Radiological abnormality persists in a majority 6 months after diagnosis but complete resolution is usual after 2 after a year or more but rarely, the lung or nodal component of the primary complex or both may calcify. Calcification may occur in the absence of any chest.
