Immunoglobulin G4-Related Disease of The Larynx Mimicking Malignancy: A Case Report and Review of the Literature

Immunoglobulin G4–related disease is characterized by increased serum immunoglobulin G4 level, enlargement in the relevant organs and histopathologically intense storiform fibrosis, lymphoplasmacytic infiltration rich positive plasma cells, obliterative phlebitis. In this report, a patient who underwent laryngeal biopsy with pre-diagnosis of malignancy, but had findings consistent sample, described. can be seen very rare localizations. It should kept mind differential diagnosis when tissues especially containing inflammation cells are encountered. Clinical, laboratory pathological correlation extremely important an G4-related disease.