how do you knw u have lung cancer? what are the symptoms?

Apparently Dr can hear a difference in your lung sound before you even notice symptoms.

If you have symptoms of something that is not normal for you, see a Dr and get a diagnosis, don't try to self diagnose, you may find your symptoms don't fit cancer, but that won't mean you have nothing that needs treatment.

try this link see if it helps
webmd.com/lung-cancer/tc/lung-cancer-symptoms

emedicinehealth.com/lung_cancer/page3_em.htm

A cough that wouldn't go away was my only symptom before being dx'd with stage iv lung cancer. The only way you can tell for sure is by getting xrays, or better yet, a CT scan.

I have your answer I reviewed google, yahoo and alexa and found this
check it out
img10.imageshack.us/img10/749/1215breastcancer2copycoy.jpg I will check it out good luck!

I don't have to google anything, I know. there are very different symptoms, as I had 3 brother who died of lung cancer. they all smoked quite heavy. all of them always coughing especially in the mornings. as they grew older their stamina declined, their breathing became shallow. one gave up smoking 4.5 years prior to his death, age 54. He had pains at the back of his leg, and was treated for sciatica. (for ages). but by then the lung cancer had gone to the bones.The second one aged 63 died quite quickly, except an awful cough and loosing lots of weight he had no other symptoms. the 3rd die aged 74 a slow death with Oxygen to help him breath. they all lived otherwise a healthy life and were in lots of fresh air. they all were breathing very badly towards their end and none of them could have been saved with operations, Chemo Therapy or Radiation. A 4 brother stopped smoking 5 years ago, he too is on Oxygen day and night, and probably wont see the year out. My last and 5th brother never smoked and he is 68 but his health is of a 45 year old. my sister never smoked age 78 is still very healthy. Now me, I am not proud to say that I only gave up the fags a few years ago, and since then my breathing capacity has improved greatly. So I just pray, that God keeps me healthy for many more years. good luck to you too