Oral and maxillofacial symptoms of patients with IgG4-related disease: The meaning of a labial minor salivary gland biopsy

Out of the 63 patients, only 18 (29%) had symptoms in the oral and maxillofacial regions. Infiltration of IgG4-positive plasma cells, regardless of their intensity in the non-symptomatic LMSG, might be considered as one of the important symptoms of IgG4-RD.