RESUMO
We examined three patients with optic disc edema and peripapillary hemorrhages. Each was found by standard echography to have calcified nodules within the retrobulbar portion of the optic nerves. These nodules were located approximately 2 mm posterior to the lamina cribrosa. Each patient had unilateral congestion of the optic nerve head with dilated, tortuous retinal veins that appeared much like a partial central retinal vein occlusion; one patient subsequently developed optic atrophy. The central location of the calcifications within the anterior aspect of the optic nerves suggests that each nodule may have been situated within the central retinal vein or artery. Calcifications within the retrolaminar space may be associated with some etiologies of unilateral congestion of the optic nerve head.
Assuntos
Calcinose/complicações , Doenças do Nervo Óptico/complicações , Papiledema/etiologia , Hemorragia Retiniana/etiologia , Adulto , Idoso , Calcinose/diagnóstico por imagem , Feminino , Angiofluoresceinografia , Fundo de Olho , Humanos , Masculino , Atrofia Óptica/etiologia , Doenças do Nervo Óptico/diagnóstico por imagem , Doenças Retinianas/etiologia , Vasos Retinianos , Ultrassonografia , Testes VisuaisRESUMO
Ocular toxocariasis most commonly presents as one of three distinct clinical syndromes: endophthalmitis, localized posterior granuloma, or peripheral granuloma. Using standardized echography, the authors studied 11 toxocariasis patients presenting with one of these syndromes. Common echographic findings were noted in ten of these patients, and included: (1) a solid, high-reflective peripheral mass, (2) a vitreous band or membranes extending between the posterior pole and the mass, and (3) a traction retinal detachment or fold from the posterior pole to the mass. These findings were present in patients presenting with leukocoria or endophthalmitis, as well as in patients in whom the peripheral nematode lesion could be visualized clinically. In combination with the history, clinical examination, and enzyme-linked immunosorbent assay (ELISA), standardized echography may be useful in establishing the diagnosis of ocular toxocariasis in cases of leukocoria in which nematode endophthalmitis is suspected.