The Dutch Co-operative Head and Neck Oncology Group performed a retrospective, nationwide study of laryngeal cancer between 1975 and 1984. The results for T3 laryngeal cancer treated with primary laryngectomy (n = 137) with post-operative radiotherapy when indicated or planned combined (pre-operative) radiotherapy with laryngectomy (n = 113) are analysed. The disease-free survival independent prognostic factors were treatment modality (planned combined treatment fared better, P = 0.001), incomplete resection of disease (P = 0.006), positive lymph nodes in the neck dissection specimen (P = 0.03) and poor differentiation (P = 0.04). Local control (95% vs. 85%, P = 0.01) as well as regional control (96% vs. 79%, P = 0.0001) was improved in the combined group compared with the primary laryngectomy group. Regional control was 69% for N0 patients if the neck nodes were not treated electively, compared with 98% for the planned combined treatment group. It is concluded that elective treatment of the neck nodes in T3 laryngeal cancer is mandatory. Radiotherapy is preferred, since as well as regional control, local control will also improve.
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