A 59-year-old woman noticed swelling of upper eyelids and sublingual region. Dryness of the oral cavity and eyes was not present. Examination of a biopsy specimen of the tumor showed marked polyclonal lymphoproliferation with lymphoid follicles on immunohistological staining. This was a case of so-termed pseudolymphoma. We gave prednisolone at 30 mg initially and gradually decreased the dose. When we stopped treatment with prednisolone, tumor recurrence was noted. Treatment with prednisolone was started again, and symptoms improved while receiving a dose of 10 mg. Since the transformation of pseudolymphoma to malignant lymphoma has been reported, careful follow-up is necessary.
