Background/aims: Ocular surface squamous neoplasia (OSSN) is a spectrum of disease, on which few large series have been published, none in particular, from the UK. The purpose of this study is to describe experience of this condition from a UK national ocular oncology centre, including statistical analysis to elucidate factors significant in recurrence. Methods: Retrospective review of case notes, clinical photographs and histopathology reports. Results: 78 cases were included, of which 10 (12.8%) recurred during the follow-up time (mean 37 months). The 1-year recurrence rate was 10.9%, and 5-year recurrence rate was 18.5% using Kaplan-Meier analysis, with a mean time to recurrence of 9.5 months. Significant factors in recurrence were tumour size and first treatment given. Grade of OSSN, including presence of invasive disease and positive biopsy margins were not found to be statistically significant in recurrence. Conclusions: OSSN in an uncommon disease in the UK population. However, when managed appropriately in a specialist centre, it is associated with good outcomes, even in recurrence situations.
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