Local lymph node enlargement usually indicates a regional infection. 局部淋巴结肿大通常是意味著该淋巴节附近区域之感染。
Commonly, these tumors have vascular or lymphatic invasion.High mitotic rate, necrosis and nuclear pleomorphism are also frequent. 此疾病常有淋巴及血管浸润，一旦扩散至颈部淋巴节往往视为不良预后，随之容易有远端转移而具高致死率。
