• Alison McHugh, Jessica Wauchope, Stephen Kieran, Tom Moran, and Fergal O'Duffy.
• Mater Misericordiae University Hospital, Dublin, Ireland. alisonmchugh@rcsi.com.
• Ir J Med Sci. 2024 Apr 1; 193 (2): 555563555-563.

BackgroundOcular lymphomas are rare, indolent tumours that pose a diagnostic challenge. Patients may be asymptomatic or present with symptoms of increased orbital mass. An index of suspicion is required alongside an understanding of the diagnostics and staging required to facilitate expedited multi-disciplinary work-up and management.MethodsA comprehensive literature review was performed. We present a series of three cases, each presenting their own diagnostic challenge.ResultsAlthough ocular lymphomas are notoriously difficult to diagnose histologically, our case series show procurement of a diagnostic histological sample using an image-guided endoscopic sinus approach.ConclusionsAlthough not typically involved in the diagnosis or management, the otolaryngologist may encounter ocular lymphoma masquerading as sinus disease or with disseminated disease at other sites in the head and neck. Endoscopic sinus surgery is considered a safe, effective approach for achieving a histological diagnosis in these cases.© 2023. The Author(s), under exclusive licence to Royal Academy of Medicine in Ireland.

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