The effectiveness of treatment of lymph nodes in cancers of the pyriform sinus and supraglottis.

Three hundred and twelve patients with pyriform sinus or supraglottic cancer were reviewed with respect to effectiveness of therapy upon nodal control. All patients had a minimum 3-year follow-up. Combined modality therapy (radiotherapy and surgery) conferred a higher neck control rate for both N0/N1 and N2/N3 nodes than moderate dose (50 to 60 Gy) radiotherapy alone. Neck dissection appeared to be a significant component of therapy for all neck stages. Fixed nodes, a subset of N2/N3 disease with a very poor prognosis, required combined modality therapy for the best nodal control rates. Downstaging to pN0 with preoperative radiotherapy provided superior nodal control and survival rates.