DEAR DR. ROACH: Is it possible for X-rays and a CT scan to miss advanced lung cancer? My brother worked two days before he died. He went to the hospital, was admitted to hospice and died the next day. I wonder if he knew at least a year ago, but didn't tell anyone. He said his scans showed pneumonia. His son was called to the hospital and spent the day with him until he died. During his last day, my brother told him that he had lung cancer and that it was not diagnosed earlier. -- N.W.
ANSWER: I am very sorry about your brother.