The Right Posterior Carotid Sheath Channel: A Potential Anatomical Structure Associated With Lymph Node Metastasis in Papillary Thyroid Carcinoma
This prospective case series identifies a previously overlooked anatomical region, the right posterior carotid sheath channel, as a site of lymph node metastasis in 12.1% of papillary thyroid carcinoma patients, suggesting it may represent a distinct lymphatic pathway that warrants further investigation before routine surgical dissection is recommended.