Background: Despite its importance in clinical practice, clinical guideline pathway selection and as an outcome in clinical trials, little work has been undertaken to understand the agreement between expected lung function loss and actual observed values. This is particular pertinent in view of the unexpected findings of JCOG 0802 and CALBG 140503 demonstrating no clinically meaningful difference in lung function loss between the sub-lobar resection and lobectomy arm.
Methods: We performed a retrospective analysis on preoperative and postoperative forced expiratory volume in one second (FEV1), forced vital capacity (FVC) and diffusing capacity for carbon monoxide (DL) collated from 158 patients who underwent anatomical lung resection between January 2013 to July 2023.