Vitreoretinal presentation of secondary large B-cell lymphoma in patients with systemic lymphoma.

IMPORTANCE Intraocular lymphomas represent a diverse group of hematologic malignant neoplasms involving different tissues within the eye. Predominant involvement of the retina and vitreous without uveal infiltration in systemic lymphoma, mimicking a primary vitreoretinal lymphoma, is extremely rare. Our study emphasizes the importance of systemic evaluation in addition to central nervous system evaluation in all patients with newly diagnosed vitreoretinal lymphoma. OBJECTIVE To determine the incidence of secondary intraocular lymphoma presenting as vitreoretinal infiltrates without central nervous system involvement, mimicking primary vitreoretinal lymphoma in patients with systemic lymphoma. DESIGN Retrospective review of all vitreous aspiration biopsy samples acquired because malignant neoplasm was suspected clinically that were obtained at our institution from January 1, 2000, through December 31, 2010. Review included patient clinical history, radiographic study findings, cytologic and/or histologic preparations, immunophenotypic study findings, treatment, and outcomes. SETTING Mayo Clinic pathology database. PARTICIPANTS Fifty-five patients with vitreous specimens available for review. EXPOSURES Vitreous aspiration biopsy. MAIN OUTCOME AND MEASURE Confirmation of the diagnosis of diffuse large B-cell lymphoma (DLBCL). RESULTS Of the 55 patients with vitreous specimens available for review, 3 (5%) had a DLBCL infiltration in the vitreous without any central nervous system involvement as a manifestation of systemic lymphoma. All 3 patients were men, aged 54, 66, and 73 years, and had blurred vision and floaters for several weeks before undergoing diagnostic vitrectomy. Ophthalmic examinations revealed clumps of vitreous cells but no choroidal involvement. One patient had no history of lymphoma; the diagnosis of vitreoretinal lymphoma was followed by DLBCL after a lymph node biopsy. The other 2 patients had low-grade B-cell lymphoma and chronic lymphocytic leukemia for 29 and 7 months before large-cell transformation in the eye. Patients were treated with systemic chemotherapy plus intraocular injections of rituximab or methotrexate sodium. CONCLUSIONS AND RELEVANCE Vitreoretinal symptoms of DLBCL in patients with systemic lymphoma may be more frequent than previously thought (5% in our study). Not all lymphomas with vitreoretinal involvement represent primary intraocular lymphomas; thorough ophthalmologic evaluation in patients with visual symptoms and complete staging in patients with documented ocular lymphoma are of utmost importance.