Figure 5b. Retinocytoma in a 3-year-old boy with left strabismus and leukocoria. (a) Photograph of the sectioned gross specimen shows a homogeneous white, smooth, biconvex mass (arrowhead) in the posterior pole that abuts the retina. (b) Axial unenhanced CT image shows the smooth, hyperattenuating focal thickening of the posterior retina of the left eye (arrowhead).