A 48-year-old male presents with cough, hemoptysis, and right-sided chest pain for 3 weeks. Clinical and imaging findings confirm central right lower lobe lung cancer. The most critical factor to further determine and evaluate in this patient is:
A 48-year-old male presents with cough, hemoptysis, and right-sided chest pain for 3 weeks. Clinical and imaging findings confirm central right lower lobe lung cancer. The most critical factor to further determine and evaluate in this patient is: