FLUORESCEIN ANGIOGRAPHIC APPEARANCE OF DALEN-FUCHS NODULES IN SYMPATHETIC OPHTHALMIA

A case of sympathetic ophthalmia is presented in which a single lesion located posteriorly at the level of the retinal pigment epithelium ca used a serous macular detachment. We believe that this lesion represen ted an atypical Dalen-Fuchs nodule. Most reports of the fluorescein an giographic appearance of Dalen-Fuchs nodules describe multiple sites o f choroidal leakage during the early phases, which may coalesce during the late phases of the angiogram. The lesion we detected was hypofluo rescent in early phases of the fluorescein angiogram and showed late s taining. The early hypofluorescence seen in the lesion may be explaine d by an intact retinal pigment epithelium over the presumed Dalen-Fuch s nodule, blockage of choroidal fluorescence by the nodule, and areas of granulomatous inflammation in the inner choroid and choriocapillari s. The staining in the late phases of the fluorescein angiogram may be explained by accumulation of fluorescein into the presumed Dalen-Fuch s nodule.