Table 2: Bunn and Lambert system. This stage classification uses the TMN staging system to subclassify the clinical disease progression.

Stage IAT1 N0 M0
Stage IIBT2 N0 M0
Stage IIAT1/2 N1 M0
Stage IIBT3 N0/1 M0
Stage IIIT4 N0/1 M0
Stage IVAT1–4 N2/3 M0
Stage IVBT1–4 N0-3 M1