Ocular copper deposition associated with monoclonal gammopathy of undetermined significance: case report Depósito ocular de cobre associado a gamopatia monoclonal de significância indeterminada: relato de caso

To report a case of ocular copper deposition in both eyes at the level of Descemet's membrane associated with a monoclonal gammopathy of undetermined significance (MGUS). A 49-year-old white woman had golden-brown metallic dust-like deposits on Descemet's membrane of both eyes. A systemic...

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Bibliographic Details
Main Authors: Patrick F. Tzelikis, Peter R. Laibson, Marco P. Ribeiro, Christopher J. Rapuano, Kristin M. Hammersmith, Elisabeth J. Cohen
Format: Article
Language:English
Published: Conselho Brasileiro de Oftalmologia 2005-08-01
Series:Arquivos Brasileiros de Oftalmologia
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Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492005000400021
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Summary:To report a case of ocular copper deposition in both eyes at the level of Descemet's membrane associated with a monoclonal gammopathy of undetermined significance (MGUS). A 49-year-old white woman had golden-brown metallic dust-like deposits on Descemet's membrane of both eyes. A systemic examination revealed an elevated serum copper, normal serum ceruloplasmin and a normal level of total protein. Serum protein electrophoresis demonstrated a single peak (M-spike) in the gamma region (M-protein in serum = 11 g/l). Flow cytometric analysis of the marrow aspirate identified a monoclonal plasma cell population that represents approximately 2% of the total marrow cells consistent with the diagnosis of monoclonal gammopathy of undetermined significance. Copper deposits at the level of Descemet's membrane may be a finding in a patient with monoclonal gammopathy of undetermined significance.<br>Relatar um caso de depósito corneano de cobre em ambos os olhos a nível da membrana de Descemet associado a gamopatia monoclonal de significância indeterminada (GMSI). Paciente feminina, 49 anos, leucodérmica, apresentando depósito corneano de aspecto marrom-ouro a nível da membrana de Descemet em ambos os olhos. Exame sistêmico revelou cobre sérico elevado, ceruloplasmina sérica normal, e proteína total normal. Eletroforese de proteínas séricas demonstrou um pico único na região gama (proteína M = 11 g/l). Análise citométrica de aspirado medular evidenciou uma população de células plasmáticas monoclonais de aproximadamente 2% do total de células medulares consistente com o diagnóstico de gamopatia monoclonal de significância indeterminada. Depósitos de cobre a nível da membrana de Descemet podem ser encontrados em pacientes com gamopatia monoclonal de significância indeterminada.
ISSN:0004-2749
1678-2925