Neck dissection and post-operative chemotherapy with dimethyl triazeno imidazole carboxamide and cisplatin protocol are useful for oral mucosal melanoma

Table 2 Th treatment results between the primary intraoral lesion stage and treatment methods

Classification	Treatment methods	Case number	Late intraoral recurrence	Late cervical lymph node metastasis	Late distant metastasis
T3 stage	Cryotherapy	33	6/26 (23.1%)	5/26 (19.2%)	11/26 (42.3%)
	Surgery	7	1/5 (20%)	0/5	0/5
	Both	13	5/11 (45.5%)	1/11 (9.1%)	1/11 (9.1%)
T4a stage	Cryotherapy	3	2/3 (66.7%)	2/3 (66.7%)	2/3 (66.7%)
	Surgery	4	1/4 (25%)	0/4	3/4 (75%)
	Both	4	1/3 (33.3%)	0/3	2/3 (66.7%)

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