Evolution and changing trends in surgery for benign parotid tumors

Area of Science:

• Otolaryngology
• Head and Neck Surgery
• Surgical Oncology

Background:

• The optimal surgical approach for benign parotid tumors is debated.
• Surgical techniques have evolved over time, with a trend towards less invasive procedures.
• Facial nerve preservation and avoiding Frey's syndrome are key concerns in parotid surgery.

Purpose of the Study:

• To analyze the evolution of surgical management for benign parotid tumors over 12 years.
• To investigate the correlation between surgical approach changes and the incidence of facial palsy and Frey's syndrome.
• To evaluate the impact of surgical de-escalation on functional outcomes in parotid tumor treatment.

Main Methods:

• Retrospective analysis of 1,624 patients treated for benign parotid tumors from 2000-2012.
• Classification of surgical methods into extracapsular dissection, partial superficial parotidectomy, superficial parotidectomy, and complete parotidectomy.
• Statistical evaluation of the association between surgical technique and postoperative complications.

Main Results:

• The total number of parotidectomies increased from 71 to 184 annually.
• Extracapsular dissection saw a significant rise, from 9 to 123 cases.
• Less radical surgeries correlated with decreased rates of temporary facial palsy (22.8% to 9%) and permanent facial palsy (9.8% to 5.9%).
• Frey's syndrome incidence dropped from 11.3% to 1.6% with less invasive approaches.

Conclusions:

• A shift towards less radical surgical techniques for benign parotid tumors is evident.
• Increased use of less invasive procedures is associated with improved functional outcomes.
• Less radical surgery leads to significantly lower rates of facial nerve injury and Frey's syndrome.