The doctor did the right thing by not telling the man he had a tumor. Because he didn’t tell him, the man has finally found happiness in his trip to Austraila. If the man heard the bad news that he has cancer, he would be very depressed and just want to die. If I was the doctor I would have told him he has cancer when he returns from his trip. Why tell him before if his cancer is slow and incurable. If I was the patient I would want to be told after the trip too. I would have an amazing time and not have to worry one bit.