Resumo

CATALA-MORA, J. et al. Uveitis masquerade syndrome presenting as a diffuse retinoblastoma. Arch Soc Esp Oftalmol [online]. 2009, vol.84, n.9, pp.477-480. ISSN 0365-6691.

A 3-year-old boy presented with an intermediate uveitis. Complete ophthalmic exam, ocular ultrasonography, magnetic resonance imaging and computerized tomography of the orbit were inconclusive. Determination of the aqueous humor/serum rate of Lactate dehydrogenase (LDH) was the key for the diagnosis of a diffuse retinoblastoma. Discussion: A masquerade syndrome is the initial presentation in 1-3% of retinoblastomas. Aqueous humor punction is contraindicated in patients with retinoblastoma but it might be the only way to achieve a correct diagnosis in these difficult and very unusual cases: enzymatic assays such as LDH offer a good sensitivity and specificity for the diagnosis of these patients.

Palavras-chave : Intermediate uveitis; LDH; masquerade; retinoblastoma.

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