Solitary Congenital Hypertrophy of the Retinal Pigment Epithelium Features by High-Definition Optical Coherence Tomography

Abstract

To describe the features of solitary congenital hypertrophy of the retinal pigment epithelium (CHRPE) using high-definition optical coherence tomography (HD-OCT). This was a retrospective, observational, noncomparative case series including 16 consecutive patients with solitary CHRPE. We describe the clinical and OCT features of CHRPE using the 5 radial lines acquisition OCT protocol over the CHRPE and the retina next to the tumor. The mean patient age was 54 years (median 57 years; range 8-76 years). The CHRPE lesion was outside the posterior pole in 14 of the patients (8 temporal, 3 superior, 2 nasal, and 1 inferior quadrant) and 2 peripapillary. Fifteen patients (94%) showed retinal thinning and complete photoreceptor loss overlying the CHRPE. The RPE hyperreflectivity was found in all patients. The retina over the lesion measured a mean of 60.3% (range 41%-95%) of the thickness of the adjacent normal retina. High-definition OCT showed retinal thinning, photoreceptor loss, and RPE hyperreflectivity in solitary CHRPE lesions.