Variations of neck structures after supracricoid partial laryngectomy: a multislice computed tomography evaluation.

Area of Science:

• Otolaryngology
• Head and Neck Surgery
• Anatomy

Background:

• Laryngeal cancer surgery historically caused significant cervical anatomy alterations.
• The cricoarytenoid complex is recognized as crucial for laryngeal function.
• Understanding anatomical changes post-surgery is key for functional recovery.

Purpose of the Study:

• To assess anatomical parameter variations after partial laryngectomy.
• To correlate these variations with functional outcomes, specifically swallowing.
• To identify predictive anatomical markers for positive functional results.

Main Methods:

• 18 male patients undergoing cricohyoidoepiglottopexy (CHEP) were studied.
• Computed tomography (CT) was used to measure cervical structures pre- and post-surgery.
• Key parameters included hyoid bone morphology/position (alpha-angle) and epiglottis position.

Main Results:

• CHEP significantly modified hyoid bone morphology, position, and its relation to other structures (alpha-angle).
• A significant craniocaudal shift of the neolarynx and trachea was observed.
• Epiglottis position relative to the arytenoid cartilage correlated with swallowing function and recovery.

Conclusions:

• Partial laryngectomy via CHEP leads to significant anatomical variations in the neck.
• Specific parameters like the alpha-angle, hyoid bone width, and epiglottis position are important.
• These identified parameters may predict a positive functional outcome post-surgery.