Histopathologic analysis of a biopsy sample of the retinal tumor which was obtained during pars plana vitrectomy.Notes: Plump spindle-shaped cells with round or slightly elongated nuclei are observed. Mitotic activity is not evident. Hematoxylin-eosin staining was used. Yellow bar represents 100 μm. Aggressive retinal astrocytoma associated with tuberous sclerosis. Tomida M, Mitamura Y, Katome T, Eguchi H, Naito T, Harada T - Clinical ophthalmology (Auckland, N.Z.) (2012). Not Altered. CC.