Psoas muscle index as a novel measure of frailty and predictor of post-operative outcome in octogenarians with non-small cell lung cancer

Radiologically derived PMI is an easily replicable marker which may be a useful adjunct to BMI in identifying high-risk octogenarians in whom prehabilitation may achieve superior outcomes post-surgery for NSCLC. Additionally, the method we describe avoids additional imaging to derive these measurements and can be safely incorporated into pre-operative imaging protocols.