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Effect of remaining systemic treatment options on functional outcomes. The proportion of patients with poor functional performance status (ECOG PS 3 and 4) is similar between two groups, with and without systemic options, at preoperative and immediate postoperative periods, but distinguishable at 6 months postoperatively. ECOG PS, Eastern Cooperative Oncology Group performance status; PO2wks, 2 weeks postoperative; PO6mo, 6 months postoperative; PreOp, preoperative.
