Well, the cause of the white spots cannot be determined based on visualisation alone. These could represent infective growths, ulcers/ erosions, growths from the stomach wall (benign or malignant) etc. A biopsy may be required to determine the etiology of the white spots. It would be best to discuss situation and the further course of investigation with his treating gastroenterologist.
Hope this is helpful.
Thanks i just worry. But i think the doctor said it was an infection that if not treated to turn into cancer. He is taking some antibiotics. N thanks again for your feed back.