Result
All 11 patients underwent surgery and perioperative education without any local or systemic complications. During the follow-up, there were 4 cases of residual pseudomembrane observed under the electronic laryngoscope, of which 2 cases appeared in 1 month postoperatively, and 2 cases in 3 months after surgery. After 8 weeks of oral PPI treatment, 3 cases of mucosa recovered smooth when follow-up again, 1 case became smooth mucosa when the third follow-up. There were no relapse in the next follow-up. The remaining 7 cases of granuloma disappeared under the electronic laryngoscopy. After an average of 6.2 months, all patients preexisting symptoms such as hoarseness, foreign body sensation in the throat, and coughing, and laryngoscopic signs were eventually clinically cured (Figure 2).