Nomori H, et al. - Researchers here aimed at elucidating differences in postoperative changes in systemic and regional pulmonary functions between segmentectomy and lobectomy in patients with lung cancer. For this, they compared the 2 procedures using lung perfusion scintigraphy with a fusion image of single-photon emission computed tomography and computed tomography. As per data, segmentectomy seemed to preserve whole lung function better than lobectomy, as it preserved the lobe in addition to increasing the function of the ipsilateral non-operated lobe. Findings suggested that lobectomy resulted in no increase in ipsilateral non-operated lobe function. After both procedures, contralateral lung function increased. Compensatory lung growth could explain the postoperative increase in regional functions.