Abstract
• Background: Standardized echography is routinely utilized to assess uveal melanomas. Echographic pseudoextension is defined as normal structures mimicking intrascleral or extrascleral extension of tumor on echography. • Methods: The records of 151 consecutive uveal melanoma patients evaluated with standardized echography over a 6-year period (1986–1991) were reviewed to identify those in which pseudoextension or true extension was diagnosed. • Results: Fourteen (9%) cases of pseudoextension were noted, with causes including juxtapapillary tumor location (seven cases), extraocular muscle insertion (five cases), vortex ampullae (one case), and post-brachytherapy changes (one case). Clinical, echographic, and/or histopathologic follow-up confirmed absence of true extension. Six (4%) cases of true extrascleral extension were identified and confirmed histopathologically. • Conclusion: Differentiating extraocular tumor extension from pseudoextension is critical, and use of standardized A-scan and contact B-scan echography is integral in this assessment.
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Murphy, M.L., Mieler, W.F., Williams, D.F. et al. Echographic pseudoextension of uveal melanomas. Graefe's Arch Clin Exp Ophthalmol 233, 399–406 (1995). https://doi.org/10.1007/BF00180942
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DOI: https://doi.org/10.1007/BF00180942