Clinical variability of ocular involvement in mycosis fungoides.

IMPORTANCE: Mycosis fungoides (MF) is the most common subtype of cutaneous T-cell lymphoma and may rarely infiltrate the ocular structures. Ophthalmic findings in MF can be highly variable. The most commonly involved ocular tissue is the eyelid skin, but intraocular involvement can be seen in patients with extensive systemic disease. To our knowledge, an isolated eyelid mass as an initial manifestation of MF has not been previously reported. OBSERVATIONS: We report a series of 4 cases of ocular involvement in patients with MF demonstrating a highly variable ophthalmic presentation of this disease. The development of an isolated eyelid mass was an initial manifestation of MF in 1 of the patients. Isolated anterior uveitis, vitritis, and choroidal mass are described in 3 patients with aggressive systemic disease. CONCLUSIONS AND RELEVANCE: Infiltration of the ocular structures by MF is rare, but the involvement of different ocular tissues and a highly variable clinical presentation can be seen. Eyelid lesion may be an initial manifestation of MF. These cases suggest that intraocular involvement occurs in patients with aggressive systemic disease and usually portends a poor prognosis for survival.