How is the morphology of granulomatous inflammation?

Epithelioid cells have pink granular cytoplasm, lymphocytes surround epithelioid cells, older granulomas have rim of fibroblasts and CT, frequently seen multinucleated giant cells (40-50 microm diameter), if certain infectious organism (Tb) see central area of necrosis (caseatous necrosis, amorphous structure, eosinophilic debris) Granuloma of Crohn disease, sarcoidosis and foreign body are non-caseating. Healing is accompanied w/fibrosis that may be extensive