Clinical Study Of Contrast-enhanced Ultrasound And Partial Parotidectomy In Parotid Benign Tumors

Objective:1.To clarify the value of contrast-enhanced ultrasound in qualitative diagnosis of parotid tumors.2.To discuss clinical effect and rationality of partial parotidectomy in parotid benign tumors.Methods:1.A retrospective research about patients with parotid benign tumors from January 2010 to December 2013 was included in this study.The results of preoperative contrast-enhanced ultrasound was compared with postoperative pathological examination to obtain the rate of coincidence.2.78 patients with parotid benign tumors received partial parotidectomy and the general condition, time of operation, loss of blood and the usage of prosthodontics membrane (acellular dermal matrix) was evaluated. Questionnaire was used to estimate the degree of satisfaction, recurrence, Frey’s syndrome, numb in earlobe area and dry mouth.Results:The coincidence rate in differentiating benign and malignant tumor was 95.04% between the results of preoperative contrast-enhanced ultrasound and postoperative pathological examination. There were no statistical differences between contrast-enhanced ultrasound and needle aspiration biopsy.78 patients was included in the study (37 males and 41 females, aged from 16 to 86 years old with an average age of 43.9 years). The averageoperation time was 57.8±±11.1 min and the loss of blood was 32.4± 11.6ml. Prosthodontics membrane was used in 35 cases and the incidenceof Frey’s syndrome was 2.86%. During 1-4 years follow-up, none of tumorrecurrence, permanent numbness,permanent facial paralysis and dry mouthwere recorded. Patients were satisfied with the postoperative appearance and function.Conclusion:1.Contrast-enhanced ultrasound technology could accurately identify the nature of parotid gland tumors and the accuracy of Contrast-enhanced ultrasound was almost the same as needle aspiration biopsy (p>0.05).Contrast-enhanced ultrasound technology would be the priority of parotid gland tumor.2. The time of operation and the loss of blood by partial parotidectomy was obviously reduced and partial parotidectomy would not increase the recurrence, but effectively reduce the occurrence of postoperative complications. Patients were satisfied with the postoperative appearance and function.