Which histopathologic feature is characteristic of sarcoidosis?

Which histopathologic feature is characteristic of sarcoidosis?

• A. Non-caseating granulomas
• B. Caseating granulomas
• C. Ghon complex
• D. Langhans giant cells with caseation

Answer: (A)

Non-caseating granulomas are the histopathologic hallmark of sarcoidosis. These are tight clusters of epithelioid macrophages, often with multinucleated giant cells, surrounded by lymphocytes, and they lack central necrosis. That absence of caseation distinguishes them from TB and fungal infections, where granulomas typically show caseating necrosis—the center becomes cheese-like. Related TB features include the Ghon complex, which reflects a primary TB lesion with hilar lymph node involvement, and Langhans giant cells with caseation, a pattern more characteristic of mycobacterial infection. So the presence of non-caseating granulomas best fits sarcoidosis.

Non-caseating granulomas are the histopathologic hallmark of sarcoidosis. These are tight clusters of epithelioid macrophages, often with multinucleated giant cells, surrounded by lymphocytes, and they lack central necrosis. That absence of caseation distinguishes them from TB and fungal infections, where granulomas typically show caseating necrosis—the center becomes cheese-like. Related TB features include the Ghon complex, which reflects a primary TB lesion with hilar lymph node involvement, and Langhans giant cells with caseation, a pattern more characteristic of mycobacterial infection. So the presence of non-caseating granulomas best fits sarcoidosis.