Sarcoidosis is a systemic disease of unknown etiology. It is characterized by the presence of non-necrotizing granulomas distributed along the lymphatics in the peribronchovascular (axial ...

Bronchogenic carcinoma: Unilateral hilar lymphadenopathy is common, with or without paratracheal lymphadenopathy. The appearance of the primary lung cancer (not visible in all cases) is often a ...