FIGURE 2 The vocal folds were observed by electronic laryngoscope. A. There was contact granuloma in the left vocal fold before operation; B. At 1 day after operation, the vocal folds showed that the pedicle microflap covered the wound well; C. 1 month after operation, the wound was smooth with residual pseudomembrane; D. At 12 months after operation, the mucosa of biliteral vocal folds were smooth under electronic laryngoscope