a viral infection (in the lungs) or emphysema (a chronic lung condition) would not likely cause an abnormal cbc.
how can a lung exray show an infection but the white blood cell count not be raised. i thought i had a chest cold but when the dr. had a cat scan and chest ex ray done it showed an infection in my lungs enlarged lymph nodes and emphysema in the early stages but my cbc came back normal not showing the infection that showed up in the ex ray and ct scan?