Operative finding of several subhemispheric surgeries. A : Operative finding of anterior quadrantectomy. B : Operative finding of posterior quadrantectomy. C : Operative finding of posterior quadrantectomy, followed by frontal lobectomy. Final cortical incision margin (red line below) added on posterior quadrantectomy (light sea green line below). Lt. : left, H : hemisphere, F : frontal, PQ : posterior quadrantectomy.