Local lymph node enlargement usually indicates a regional infection. 局部淋巴結腫大通常是意味著該淋巴節附近區域之感染。
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潤,一旦擴散至頸部淋巴節往往視為不良預后,隨之容易有遠端轉移而具高致死率。