my boyfriend's xray shows shadow in his lung. hes afraid that it would be cancer he does not wanna go to see the doctor. hes been smoking for 14 years of half a pack a day. it was an accident that he did the xray n found the shadow. he has not been coughing persistently nor spitting blood at any time. yet lately hes been feeling chest pain. and one thing that i noticed is hes sweating when he was sleeping. is that one of the symptoms too? is there any other symptoms that has not been mentioned in any of the post?