My 13 Year Old Son Went In Friday For A

My 13 year old son went in Friday for a sports physical they did an ekg on him which came back showing possible left ventricular hypertrophy. We are doing an echo this Wednesday. He plays basketball never once has mentioned any chest pain, he's active just like kids his age and we don't have family history of heart disease. Could it be possible to have a normal echo? At the end of the ekg it did say possibly normal.