Pathology X-bodies called Birbeck granules are characteristically seen in – A Granulomatous vasculitis B Pulmonary alveolar proteinosis C Langerhan's cells granulomatosis D Idiopathic pulmonary alveolar proteinosis 💡 Explanation X-bodies called Birbeck granules are characteristically seen in - ✓ Correct Answer: C. Langerhan's cells granulomatosis