This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: dermatology and infectious disease, Subject name: Pathology
Bilateral hilar lymphadenopathy with non caseating granuloma is seen in 
Select and explain. 
A. TB, B. Lymphoma, C. Sarcoidosis, D. All of the above
C: Sarcoidosis
Answer: C: Sarcoidosis 
Explanation: 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.