Fig. 26. Small intraretinal retinoblastoma. A. Small poorly defined white intraretinal mass with fine intralesional vascular channels. B-D. Fluorescein angiogram of lesion. B. Arterial phase frame showing filling of retinal arteries supplying tumor. C. Later arterial phase frame showing filling of capillary network within tumor. D. Late-phase frame showing homogeneous mild staining of tumor.