Factors influencing Frey syndrome after parotidectomy with acellular dermal matrix

Figure 1 The drainage tube was placed above the patch according to the product guidelines for patients with an implanted tissue patch. A: Diagram B of the surgical incision; B: For superficial parotid lobectomy behind nerve exposure; C: Acellular dermal matrix after implantation.

Figure 2 Diameter of surgically resected sample and receiver operating characteristic curve with Frey sign. ROC: Receiver operating characteristic.

Figure 3 Frey sign occurrence time and receiver operating characteristic curve after acellular dermal matrix implantation. ROC: Receiver operating characteristic.