Purpose: To report an unusual case of ocular peripheral T-cell lymphoma presenting as sclerouveitis.
Methods: A 53-year-old woman presented with painful, unilateral sclerouveitis and was initially treated with antivirals and corticosteroids for what was presumed to be isolated ocular HSV infection with vasculitis. When she failed to improve the conjunctiva was biopsied and characterized by immunohistochemical and molecular methods. The literature regarding conjunctival T-cell lymphomas as well as lymphomas mimicking scleritis is reviewed.
Results: Biopsies of a scleral/conjunctival nodule from the right eye were obtained on 2 occasions, the second of which revealed the presence of intermediate to large size lymphocytes that were CD3, T-cell intracellular antigen 1 and Granzyme B positive but CD56 and Epstein Barr virus negative. Polymerase chain reaction showed clonal T-cell receptor gamma rearrangements in DNA samples isolated from biopsy tissue. Another biopsy was obtained from a mucosal lesion in the oropharynx, which was shown to contain an identical T-cell receptor gamma rearrangement. These results led to the diagnosis of peripheral T-cell lymphoma. Conjunctival T-cell lymphomas have been reported in two other patients both of which also had involvement of upper airway structures. Five other reports of lymphoma mimicking scleritis are discussed.
Conclusions: Peripheral T-cell lymphoma should be considered in the differential diagnosis of patients who present with sclerouveitis of unknown etiology unresponsive to conventional therapy. If a conjunctival T-cell lymphoma is identified a systemic evaluation for lymphoma with particular attention to the upper airway is justified.