Open Access

Table 1

Clinical staging system for oral malignant melanoma with histopathologic microstaging for stage I (Prasad [20]).

Stage I Primary tumor present only (Tany N0 M0)
Level I: pure in situ melanoma without evidence of invasion or in situ melanoma with “microinvasion”.
Level II: invasion up to the lamina propria.
Level III: deep skeletal tissue invasion into skeletal muscle, bone, or cartilage.
Stage II Tumor metastatic to regional lymphnodes (Tany N1 M0)
Stage III Tumor metastatic to distant sites (Tany Nany M1)

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