The lymphatic drainage of pyriform fossa is to
Lymphatic drainage of Hypopharynx 1) Pyriform sinus drains into upper jugular chain and then to deep cervical group of lymph nodes. 2) Postcricoid region drains into parapharyngeal and paratracheal group of lymph nodes. 3) Posterior pharyngeal wall drains into parapharyngeal lymph nodes and finally to deep cervical lymph nodes. Ref:- Tuli; pg num:- 231, 232
Prelaryngeal node
Parapharyngeal nodes
Mediastinal nodes
Upper deep cervical nodes
Pharynx