BenEzra D, Chirambo M C
J Pediatr Ophthalmol. 1976 Nov-Dec;13(6):340-3.
The annual incidence of retinoblastoma in Malawi seems to be two cases per 100,000 children under five or one case per 10,000 live births. A higher frequency of one case per 21,700 to 17,900 children under five or one per 4,340 to 3,580 live births has been found in the Zomba and Mangochi districts. Analyzing the cases according to sex and laterality, 61.1 percent of the unilateral cases were girls and 58.3 percent of the bilaterals were boys. Among boys, 33.3 percent were bilateral while unilateral involvement of the left eye was found in 19.1 percent. Among the girls, the frequency of bilateral cases was 18.5 percent while the unilateral involvement of right and left eye was nearly similar.
马拉维视网膜母细胞瘤的年发病率似乎是每10万名5岁以下儿童中有2例，或每10000例活产中有1例。在松巴和曼戈奇地区发现了更高的发病率，即每21700至17900名5岁以下儿童中有1例，或每4340至3580例活产中有1例。根据性别和发病部位对病例进行分析，单侧病例中61.1%为女孩，双侧病例中58.3%为男孩。在男孩中，33.3%为双侧病例，19.1%为左眼单侧受累。在女孩中，双侧病例的发生率为18.5%，右眼和左眼单侧受累的频率几乎相似。
