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Bilateral Diffuse Uveal Melanocytic Proliferation: Molecular Genetic Analysis of a Case and Review of the Literature.
Ocular Oncology and Pathology 2015 December
PURPOSE OF THE STUDY: To describe the clinicopathological features, mutational and chromosomal copy number analysis, and 8-year follow-up of a case of bilateral diffuse uveal melanocytic proliferation (BDUMP) associated with clear-cell carcinoma of the endometrium.
METHODS: Histological evaluation, multiplex ligation-dependent probe amplification (MLPA) analysis and GNAQ/11 mutational analysis were performed in a 67-year-old female patient with the diagnosis of BDUMP.
RESULTS: Histological evaluation revealed proliferation of bland spindle cells, diffusely replacing the uveal tract, which showed a proliferation index of less than 1%. There was absence of mutations involving the codon 209 and 183 of GNAQ, and of GNA11. MLPA analysis showed disomy 3 with polysomy 8q for both eyes. The patient died 8 years later of an unrelated condition.
CONCLUSIONS: Although BDUMP is considered to be a benign proliferative disease, copy number alterations of unknown significance may occur in these lesions.
METHODS: Histological evaluation, multiplex ligation-dependent probe amplification (MLPA) analysis and GNAQ/11 mutational analysis were performed in a 67-year-old female patient with the diagnosis of BDUMP.
RESULTS: Histological evaluation revealed proliferation of bland spindle cells, diffusely replacing the uveal tract, which showed a proliferation index of less than 1%. There was absence of mutations involving the codon 209 and 183 of GNAQ, and of GNA11. MLPA analysis showed disomy 3 with polysomy 8q for both eyes. The patient died 8 years later of an unrelated condition.
CONCLUSIONS: Although BDUMP is considered to be a benign proliferative disease, copy number alterations of unknown significance may occur in these lesions.
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