Fig. 2From: A curative-intent endoscopic surgery for postradiation nasopharyngeal necrosis in patients with nasopharyngeal carcinomaContrast-enhanced sagittal magnetic resonance imaging (MRI) of the head and neck of a patient before and after surgery. a PRNN (indicated by the red arrow) was located in the roof of the posterior wall of the nasopharyngeal cavity and oral pharynx as shown on the preoperative MRI. b The flap (indicated by the blue arrow) re-surfaced the defect after radical endoscopic necrectomy, with good blood supply at 2 weeks after surgery. c The flap completely relined the nasopharyngeal mucosa at 8 weeks after surgeryBack to article page