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03-18-2009, 10:53 AM
Granuloma of the lung
A granuloma is a mass or nodule composed of chronically inflamed tissue formed by the response of mononuclear phagocyte system (macrophage / histiocyte ) to a slowly soluble Ag or irritant. It is a chronic specific inflammation
• T. B. • Hypersensitivity pneumonitis.
• Fungal • Helminthic
• Sarcoidosis • Wegnner’s granuloma
• Histiocytosis X

Source: Internal Medicine Book of Dr.Osama Mahmoud (Ain Shams University)