Lung cancer : journal of the International Association for the Study of Lung Cancer
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To assess the body-framed stereotactic body radiation therapy (SBRT) results and toxicity for medically inoperable stage I lung cancer adjacent to central large bronchus and then compare the results with those of SBRT in peripheral lung tumor in the aspects of survival and SBRT-related pulmonary toxicities. ⋯ SBRT in this fractionation should not be given to central lung tumors because it can cause the late major airway toxicities in some patients. More protracted hypofractionated treatment regimen may be more safe than that used usually in SBRT for central lung tumors.
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It is accepted that cardiopulmonary exercise testing is one of the most valuable parameters, especially peak oxygen uptake (VO(2)), for the evaluation of risk assessment in lung cancer surgery. It therefore represents an attractive way of identifying a patient at high risk for postoperative complications. However, many patients do not achieve the maximal or predictive level during an incremental exercise testing. ⋯ Peak VO(2) without postoperative complication was 22.8+/-3.3 ml/(kg min), however, peak VO(2) in patients with present complications was 19.1+/-4.2 ml/(kg min) (p=0.001). In addition, although the mean OUES in patients with present complications was 11.1+/-1.2, the mean OUES in the absent group was 13.3+/-2.1 (p<0.001). Although peak VO(2) is useful in evaluating selected patients with bronchogenic carcinoma, OUES is also a beneficial parameter and should be calculated and recorded with peak VO(2), a better predictor of poor surgical outcome than absolute values, and should be integrated into preoperative decision making.