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What is Schaumann bodies are seen in: and explain in detail?
Ans. (a) Sarcoidosis(Ref: Robbins 9th/pg 693-694)Histology in Sarcoidosis:Well-formed non-caseating granulomas Q composed of an aggregate of tightly clustered epithelioid cells Q, with Langhans or foreign body-type giant cells; Central necrosis is unusual. QSchaumann bodies: laminated concretions composed of calcium and proteins QAsteroid bodies: Stellate inclusions enclosed within giant cells Q