From the Research
In a type 4 cordectomy, the vocalis muscle (also known as the thyroarytenoid muscle) is respected. This surgical procedure involves the removal of the vocal cord tissue extending to the inner perichondrium of the thyroid cartilage, but specifically preserves the vocalis muscle. Type 4 cordectomy is classified as an extended cordectomy that removes the vocal fold tissue while maintaining the integrity of this important laryngeal muscle. The vocalis muscle is preserved because it plays a crucial role in voice production and quality. Preserving this muscle allows for better voice rehabilitation outcomes after surgery compared to more extensive cordectomies that might remove the muscle. Type 4 cordectomy is typically performed for early glottic cancers that require more extensive resection than superficial procedures but where preservation of some vocal function is still possible. The procedure is usually performed using endoscopic techniques with either cold instruments or laser technology, as seen in studies such as 1.
Some key points to consider in the context of type 4 cordectomy include:
- The importance of preserving the vocalis muscle for voice quality and production
- The use of endoscopic techniques for the procedure
- The application of type 4 cordectomy in early glottic cancers where some vocal function preservation is desired
- The potential for improved voice rehabilitation outcomes compared to more extensive cordectomies
It's also worth noting that while other studies such as 2, 3, 4, and 5 provide information on various aspects of laryngeal anatomy and surgical procedures, they do not directly address the specifics of type 4 cordectomy and the preservation of the vocalis muscle. Therefore, the primary consideration in a type 4 cordectomy remains the preservation of the vocalis muscle to optimize postoperative voice quality and function, as supported by the most recent and relevant evidence 1.