[Retinoblastoma in 2 non-twin sisters and in 2 monozygotic twins belonging to the same family].
D002675:Child, Preschool; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007223:Infant; D012175:Retinoblastoma / Q000235:genetics*
Retinoblastoma in due sorelle mononate e in due gemelle MZ appartenenti alla medesima fratria.