1. Byrne SF, Green RL . Ultrasound of the eye and orbit. St Louis: Mosby, 1992:196–200.
2. Shields JA, Michaelson JB, Leonard BC, et al. B-scan ultrasonography in the diagnosis of atypical retinoblastomas. Can J Ophthalmol 1976;11:42–51.
3. Mafee MF, Goldberg MG, Greenwold JM, et al. Retinoblastoma and simulating lesions: role of CT and MR imaging. Radiol Clin North Am 1987;25:667–82.
4. Wilms G, Marchai G, Von Fraeyenhoven L, et al. Shortcomings and pitfalls of ocular MRI. Neuroradiology 1991;33:320–5.
5. Blach LE, McCormick E, Abramson EH, Ellsworth RM . Trilateral retinoblastoma — incidence and outcome: a decade of experience. Int J Radiat Oncol Biol Phys 1994;29:729–33.