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 Indian J Med Microbiol  
 

Postero-anterior chest radiograph in a 34-year-old man shows bilateral hilar and right paratracheal lymph nodes enlargement (‘1-2-3 sign’). Also visible is bilateral parenchymal involvement with reduced lung volumes.

Postero-anterior chest radiograph in a 34-year-old man shows bilateral hilar and right paratracheal lymph nodes enlargement (‘1-2-3 sign’). Also visible is bilateral parenchymal involvement with reduced lung volumes.