In a positive Kveim test, what type of granulomas are typically found?

• A. Caseating granulomas
• B. Non-caseating granulomas
• C. Hemorrhagic granulomas
• D. Fibrosing granulomas

Answer: (B)

In a positive Kveim test, non-caseating granulomas are typically found. The Kveim test is a diagnostic tool used to identify sarcoidosis, a condition characterized by the formation of granulomas in various tissues. Non-caseating granulomas are a hallmark of sarcoidosis and are indicative of the disease, as they reflect the presence of activated macrophages and lymphocytes without the necrotic tissue seen in caseating granulomas, which are typically associated with tuberculosis and some fungal infections.

Non-caseating granulomas are formed as part of an immune response to antigens, and their presence in a Kveim test further supports the diagnosis of sarcoidosis. This type of granuloma is characterized by a compact structure of macrophages that fuse to form multinucleated giant cells, but without the central necrosis.

Other types of granulomas listed, such as caseating, hemorrhagic, or fibrosing granulomas, do not fit the context of sarcoidosis and the interpretation of the Kveim test. Caseating granulomas are associated with infectious processes, and the other two types reflect different pathological conditions not related to sarcoidosis.