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  • Title: Small choroidal melanoma: detection with multimodal imaging and management with plaque radiotherapy or AU-011 nanoparticle therapy.
    Author: Shields CL, Lim LS, Dalvin LA, Shields JA.
    Journal: Curr Opin Ophthalmol; 2019 May; 30(3):206-214. PubMed ID: 30844944.
    Abstract:
    PURPOSE OF REVIEW: To explore risk factors for choroidal nevus transformation into melanoma using multimodal imaging and review current treatment options. RECENT FINDINGS: A recently published longitudinal study of 3806 choroidal nevi, imaged with optical coherence tomography (OCT), ultrasonography, and standard wavelength autofluorescence, revealed transformation into melanoma in 5.8% at 5 years and 13.9% at 10 years, using Kaplan-Meier analysis. Multivariate factors predictive of transformation included thickness more than 2 mm (by ultrasonography), fluid subretinal (by OCT), symptoms vision loss (by Snellen acuity), orange pigment (by autofluorescence), melanoma hollow (by ultrasonography), and DIaMeter more than 5 mm (by photography). These important factors can be recalled by the mnemonic 'To Find Small Ocular Melanoma Doing IMaging' (TFSOM-DIM). The mean 5-year estimate of nevus growth into melanoma was 1.1% for those with 0 risk factor, 11% with one factor, 22% with two factors, 34% with three factors, 51% with four factors, and 55% with five risk factors. Management of small choroidal melanoma typically involves plaque radiotherapy with 5 and 10-year rates of tumor recurrence at 7 and 11%, visual acuity loss (≥3 Snellen lines) at 39 and 49%, and melanoma-related metastasis at 4 and 9%. A novel infrared dye-conjugated virus-like nanoparticle (AU-011) is currently under investigation for treatment of small choroidal melanoma, with a goal to induce tumor regression and minimize vision loss. SUMMARY: The mnemonic, TFSOM-DIM, can assist the clinician in detection of small choroidal melanoma. Treatment of small melanoma with plaque radiotherapy offers tumor control but with potential vision loss. A novel nanoparticle therapy using AU-011 is currently under trial.
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