Lymphoma involving the temporal artery.

Involvement of the temporal arteries, considered to be the hallmark of gian t cell arteritis, is rather rare in other pathologic processes. We describe a patient with lymphoma involving temporal artery. A 68-year-old man has been followed closely without therapy since 1989 for a low-grade non-Hodgkin lymphoma. He presented in 1995 with asymptomatic no dules on the temporal artery with preservation of the pulse. Temporal arter y biopsy showed periarterial infiltration of mononuclear cells in keeping w ith follicular mixed cell lymphoma. The differential diagnosis of temporal arteritis must therefore, include ot her vasculitides, light chain amyloidosis but also lymphoma and emphasize t he need for a temporal artery biopsy.