Immunoglobulin G4 (IgG4)-related Lymphadenopathy in Submandibular Space Mimicking Submandibular Malignant Tumor: A Case Report.

A mass-like lesion of the submandibular space has been concluded and the laboratory findings have been satisfactory (IgG4 level); IgG4-related disease, which is rare, but recently often reported, can be included in the differential diagnosis.