Fig. 2From: Temporary tracheotomy for post-intubation laryngeal edema after lung cancer surgery: a case reportPerioperative laryngoscope findings. a, b Preoperative. Radiation Therapy Oncology Group (RTOG) grade 1 laryngeal edema was observed. c, d Postoperative day 2. RTOG grade 3 laryngeal edema was observed. e, f Postoperative day 16. RTOG grade 2 laryngeal edema was observedBack to article page