Jun 9, 2015; Cleveland, OH, USA; Cleveland Cavaliers forward LeBron James (23) dunks the ball against the Golden State Warriors during the first quarter in game three of the NBA Finals at Quicken Loans Arena.un 9, 2015; Cleveland, OH, USA; Cleveland Cavaliers forward LeBron James (23) signals to the crowd during the fourth quarter against the Golden State Warriors in game three of the NBA Finals at Quicken Loans Arena.
Retinoblastoma is a rare cancer, and there are no widely recommended screening tests to look for retinoblastoma in children without symptoms. Still, many retinoblastomas are found early by parents, relatives, or a childâs doctor.he RB1 gene defect can be found by a special blood test, so most doctors now advise that children with parents or siblings with a history of retinoblastoma have this genetic test done during the first few weeks after birth. The results of the test then help define how often eye exams should be done.
Retinoblastoma occurs when nerve cells in the retina develop genetic mutations. These mutations cause the cells to continue growing and multiplying when healthy cells would die. This accumulating mass of cells forms a tumor. Retinoblastoma cells can invade further into the eye and nearby structures. Retinoblastoma can also spread (metastasize) to other areas of the body, including the brain and spine. In the majority of cases, it's not clear what causes the genetic mutations that lead to retinoblastoma.