in a study of cancer risk among relatives of retinoblastoma patients , by applying this new method it was found that 11 of 33 families each obtained through a unilateral retinoblastoma patient are at statistically high risk of cancer at all sites combined , while there are 15 of 47 such families obtained through a bilaterally affected proband .
C0035335
retinoblastoma
C0006826
cancer