T-cell lymphoma of the orbit.

In a 52-year-old man with drooping of the right upper eyelid and a palpable mass in the superior temporal quadrant of the right orbit, a biopsy specimen revealed diffuse mixed-type lymphoma with immunostaining evidence of a helper T-cell phenotype. No other foci of lymphoma were found. The orbital lesion was treated with irradiation (total dose, 4,200 cGy administered in 20 treatments). At 4 1/2 years after treatment, the patient had had no recurrence.