- 85-90% of lung cancer
- Typically adenocarcinoma (40%), squamous cell (25-30%), and large cell (5-10%)
- Most common RF is tobacco smoking
- Other Rfs include asbestos exposure, environmental smoke, ionizing radiation, radon, marijuana/hookah
- 25% of lung ca (typically adeno) occurs w/no smoking hx
- Progressive cough, SOB, DOE
- Weight loss (advanced)
- Back/boney pain, neuro deficits/head ache/confusion--> mets to bone, brain, spine/cord or metabolic derangements (e.g. hypercalcemia)
- Wheezing or stridor (based on anatomic location)
- Bronchial breath sounds if consolidation
- Decreased breath sounds and dullness if effusion
- Pain over site of a boney met
- Neuro deficits if mets