Cavitary retinoblastoma is a unique form of retinoblastoma that demonstrates characteristic intralesional translucent cavities that are often more pronounced following tumor regression.1-4 There can be a single or multiple cavities, which are usually gray and spherical in configuration. Histopathologically, there is no endothelial or epithelial lining. The cavities are typically hypofluorescent on fluorescein angiography and echolucent on B-scan ultrasonography.2
Fuller TS, Alvi RA, Shields CL. Optical Coherence Tomography of Cavitary Retinoblastoma. JAMA Ophthalmol. 2016;134(5):e155355. doi:10.1001/jamaophthalmol.2015.5355
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