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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