RT Book, Section A1 Chan, Yvonne A1 Goddard, John C. SR Print(0) ID 1172368566 T1 Granulomatous Diseases of the Head and Neck T2 K.J. Lee’s Essential Otolaryngology: Head and Neck Surgery, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781260122237 LK accesssurgery.mhmedical.com/content.aspx?aid=1172368566 RD 2024/04/18 AB What is a granuloma?A granuloma is created by a chronic immunologic process resulting clinically in localized nodular inflammation.HistologyThe inflammatory response is mediated by monocytes and macrophages. Macrophages can give rise to epithelioid cells, which can secrete extracellular enzymes. Multinucleated giant cells are often found in granulomas and are thought to arise from the fusion of macrophages.These cells are surrounded by lymphocytes and eosinophils.A granuloma is complete with a fibroblastic proliferation occurring around the cells.What is the differential diagnosis of a granuloma in the head and neck?There is a significant range of symptoms caused by granulomatous diseases, not limited to the head and neck. A full history and physical examination should be performed for all patients with a granulomatous biopsy. Refer to Table 12-1.