An empirical study of modified frontolateral partial laryngectomy without tracheotomy

Area of Science:

• Otolaryngology
• Surgical Oncology
• Experimental Surgery

Background:

• Laryngeal cancer treatment often involves surgical intervention.
• Tracheotomy is a common surgical step in partial laryngectomy.
• Minimally invasive techniques are sought to improve patient outcomes.

Purpose of the Study:

• To validate the feasibility of modified frontolateral partial laryngectomy without tracheotomy.
• To assess the adequacy of the glottic area for respiration after the procedure.
• To support findings with animal experimentation.

Main Methods:

• Comparison of glottic areas in excised canine larynges (n=6) before and after surgery.
• In vivo assessment of glottic areas in canine larynges (n=10) before and after surgery.
• Evaluation of changes with cartilage open and closed states.

Main Results:

• Significant reduction in glottic area when excised larynx cartilage was closed post-surgery.
• No significant difference in glottic area in excised larynx with cartilage open.
• No significant difference in glottic area in vivo before and after surgery.
• No significant difference in glottic area in vivo after right chordectomy via laryngofissure.

Conclusions:

• Modified frontolateral partial laryngectomy without tracheotomy is feasible.
• The surgical technique is efficacious for early and selected invasive laryngeal carcinomas.
• Animal experiments support the safety and efficacy of this surgical approach.