Retinoblastoma and the Genetic Theory of Cancer: An Old Paradigm Trying to Survive to the Evidence

Table 1

Distribution of retinoblastoma by type and laterality [6].

	Bilateral	Unilateral	Total
Hereditary	25%–30%	10%–15%	35%–45%
Nonhereditary	0	55%–65%	55%–65%
Total	25%–30%	65%–70%	100%