Table 1. Clinical and histological characteristics of patients who underwent total laryngectomy as primary treatment option.

* <0.05 comparing tumor size of T4 with T2 and T3 but not between T2 and T3.

** <0.05 comparing tumor size of glottic with supraglottic and transglottic, but not between supraglottic and transglottic.

*** >0.05 comparing tumor size with 3 histological differentiation tumor types.