Multiple IgG4‐related sclerosing lesions in the maxillary sinus, parotid gland and nasal septum

IgG4‐related sclerosing disease is recognized as a distinct clinicopathological entity. It is well known that this disease can occur in the salivary, lacrimal and pituitary glands, in the head and neck region. The nasal cavity is an extremely rare site of involvement of IgG4‐related sclerosing disease. Herein is reported a case of multiple IgG4‐related sclerosing lesions in the maxillary sinus, parotid gland and nasal septum. A 73‐year‐old...