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  • Title: OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF CONGENITAL SIMPLE HAMARTOMA OF THE RETINAL PIGMENT EPITHELIUM.
    Author: Arjmand P, Elimimian EB, Say EAT, Shields CL.
    Journal: Retin Cases Brief Rep; 2019; 13(4):357-360. PubMed ID: 28489706.
    Abstract:
    PURPOSE: To describe the optical coherence tomography angiography features of congenital simple hamartoma of the retinal pigment epithelium. METHODS: Case report. RESULTS: A 14-year-old boy was referred for an asymptomatic fundus tumor in the left eye. Visual acuity was 20/20 in the right eye and 20/40 in the left eye. The right fundus was normal. The left fundus disclosed a gray-white nodular retinal mass of 2-mm diameter in the juxtafoveal region, protruding into the vitreous cavity and causing radial retinal folds. The mass demonstrated echodensity without calcification on ultrasonography, hypoautofluorescence on short-wavelength autofluorescence, and mixed hyporeflective and hyperreflective areas on near-infrared reflectance imaging. By fluorescein angiography, the mass showed absolute hypofluorescence through the arteriovenous phase and diffuse late hyperfluorescence and staining. Optical coherence tomography revealed an optically dense lesion with abrupt posterior shadowing, whereas optical coherence tomography angiography showed an extensive haphazard intratumoral vascular network with fairly large-caliber (100-200 microns) vessels occupying full-thickness tumor, demonstrating more vascular details than visualized on fluorescein angiography. Serial segmental evaluation of the optical coherence tomography angiography en face images confirmed an intratumoral vascular network for full tumor depth down to retinal pigment epithelium, not related to projection artifact. Final diagnosis was congenital simple hamartoma of the retinal pigment epithelium. Considering the benign tumor, observation was recommended. CONCLUSION: Optical coherence tomography angiography of congenital simple hamartoma of the retinal pigment epithelium revealed an extensive intratumoral, haphazard, large-caliber vascular network, more evident than seen on fluorescein angiography. Optical coherence tomography angiography has added new insight into this rare tumor.
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