title: The incidence and epidemiology of retinoblastoma in New Zealand: A 30-year survey.
abstract: One hundred cases of retinoblastoma were diagnosed in New Zealand-born children between 1948 and 1977 inclusive. Five patients had an affected parent, and of the remaining sporadic cases 25 had bilateral and 70 unilateral tumours. The frequency of retinoblastoma, 1 in 17,500 births, was similar to that reported for most other countries. There was no evidence of an increase in the incidence of all cases of sporadic retinoblastoma during the 30-year period studied, nor was there any significant fluctuation in their incidence with space and time. There was an excess of bilateral sporadic cases in the southern-most districts of New Zealand, but this was of marginal significance. There was no significance evidence for any environmental influence on the occurrence of retinoblastoma.
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005134:Eye Neoplasms / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009520:New Zealand; D012175:Retinoblastoma / Q000453:epidemiology*; D013997:Time Factors