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What is Bilateral hilar lymphadenopathy with non caseating granuloma is seen in and explain in detail?
Sarcoidosis: Sarcoidosis is a multisystem disease of unknown cause characterized by the presence of noncaseating granulomas in many tissues and organs. Noncaseating granuloma. Schaumann bodies-laminated concretions of calcium and proteins. Asteroid bodies-Stellate (star-shaped) inclusions within giant cells. Raised interleukin (IL)-2 results in T-cell expansion Anergy to skin test antigens, such as tuberculosis purified protein derivative (PPD) or as Candida.