ABSTRACT
Treatment of lung cancer, whether with surgery, chemotherapy, radiation therapy or a combination of these, can be associated with notable toxicity. It may not be feasible for patients with signifi cant impairment because of their lung cancer or comorbid conditions to undergo resection or even aggressive chemoradiotherapy. Performance status can be assessed by a variety of methods, including the Karnofsky Performance Status or the World Health Organization (WHO) status.
