Is the prognostic nutritional index (PNI) a useful predictive marker for postoperative complications after lung surgery?

An article entitled “Risk Stratification According to the Prognostic Nutritional Index for Predicting Postoperative Complications After Lung Cancer Surgery” was published in Annals of Surgical Oncology in May 2018. This article described a retrospective study of the clinical significance of the prognostic nutritional index (PNI) as an indicator for postoperative complications following lung cancer surgery. The authors concluded that PNI is a useful predictive marker for postoperative complications after lung cancer resection.