California: Up to 10 Teenagers Diagnosed with Brain Tumors in the Same Los Angeles Suburb

• Families of teenagers from the same California high school are trying to find the cause of their children's brain tumors
• Legal advocate Erin Brockovich is now helping them on their case
• No causes have been publicly identified
• Moorpark, California is now thought to be one of hundreds of cancer clusters across the U.S. 

Parents in a Los Angeles suburb have teamed up with Erin Brockovich after at least 10 area children have been diagnosed with brain tumors.

Mary and Patrick Leyden's son Patrick died five years after being diagnosed with a brain tumor at the age of 19.