mom and dad ice the bump down. the 7-year-old seems fine. until two nights later, when she cries out for help. >> "mom, mom, my head. it's hurting." she was holding it. saying "my head's hurting. my head's hurting. >> the mccrackens rush morgan to the emergency room. >> we couldn't get to the hospital fast enough. >> i carried her in. she was too lethargic to walk. >> a doctor says don't worry. >> i'm sure it's late, she's tired, she probably has a touch of the flu. >> a gut feeling tells these parents the doctor has morgan's diagnosis wrong. >> this wasn't our morgan. she's had the flu before. this wasn't how she acted. >> they ask for a ct scan of her head, but the doctor won't listen. >> what is the consequence of a doctor not listening to you? >> they're failing to hear the first manifestation of a life-threatening illness, and they're failing to register and therefore look on your body for the first clues of that and begin to order the right tests. >> after hours of begging the doctor finally does listen and orders the ct scan. here's what he missed. a blood clot inside morgan's skull. a surgery saves her life. 1 out of every 10 diagnoses you receive from a doctor may be wrong.