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口腔粘膜恶性黑色素瘤是一种恶性度很高的肿瘤。其患病率较少,约占所有黑色素瘤的1％左右。主要多见于上颌区粘膜,下颌区粘膜少见。其临床特点是肿瘤浸润性强,局部复发率高;早期就具有区域淋巴结和远处
Oral mucosal malignant melanoma is a highly malignant tumor. Its prevalence is small, accounting for about 1% of all melanomas. Mainly found in the maxillary mucosa, rare mucosa in the jaw area. Its clinical features are strong tumor infiltration and high rate of local recurrence; early on it has regional lymph nodes and distant sites.