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[The clinical manifestations and imaging characteristics of acute syphilitic posterior placoid chorioretinitis].

Objective: To investigate the clinical manifestations and imaging characteristics of acute syphilitic posterior placoid chorioretinitis (ASPPC). Methods: Retrospective study of 10 patients diagnosed ASPPC in the Department of Ophthalmology, Beijing Tongren Hospital from 2011 to 2016, including 6 males (10 eyes involved) and 4 females (8 eyes involved) with an age of (43.4±11.6) years (range, 26-60 years). Their clinical manifestations and imaging characteristics were summarized. Results: All 10 ASPPC patients complained about the reduction of visual acuity, and the majority of them had both eyes involved. The initial visual acuity ranged from finger count to 0.8, with an average of 0.4 and a median visual acuity of 0.3. The intraocular pressure was in the normal range. The inflammation of anterior chamber occurred in only one patient (1/10). The lesions were located at the posterior pole as shown on fundus photographs. There are six placoid lesions, four yellowish massive lesions and seven mixed lesions (placoid and yellowish massive lesions). Partial or whole disappearance, abnormality and opacity of the ellipsoid layer, retinal pigment epithelial (RPE) nodules, and cells in the vitreous body were observed by optical coherence tomography. There were partial detachment between the neuronal retina and RPE layer with fine-sand like hypereflective dots. The lesion size and morphology on autofluorescence (AF), fundus fluorescence angiography (FFA) and indocyanine green angiography (ICG) were almost consistent with those on fundus photography. The lesions were hyperautofluorescent in a placoid or massive shape. The lesions on FFA showed slight hyperfluorescence with unclear edges from the venous phase, and the fluorescence increased with the time and leaked in the late phase. Vascular walls showed blood staining in the late phase. The lesions on ICG showed hypofluorescence with hyperfluorescence and hypofluorescence dots like fine needles in the middle and late phases. Conclusion: ASPPC mainly occurs among the young adults without gender difference. The characteristic is the contradiction between sever clinical symptoms and slight signs on the fundus. The lesion area shown on fundus photography, FFA, ICG and AF is consistent, as well as injuries of the ellipsoid layer, RPE nodules and cells in the vitreous body. The above manifestations and imaging characteristics of ASPPC are significant for the diagnosis and differential diagnosis. (Chin J Ophthalmol, 2017, 53:352 - 357) .

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