Hi. That bump in the back of your throat
is most probably not lung cancer
. Lung cancer
usually presents as a solitary lung nodule on chest x-ray or CT scan, and may be accompanied by symptoms of chronic cough and unexplained weight loss. As far as I know, lung cancer rarely, if ever, presents as a throat mass. However, heavy cigarette smoking does increase your risk of developing cancer in the mouth and throat areas, so my first advise for you is to quit smoking now.