The 5-year-survival rate of 19 patients with mucinous adenocarcinoma and 56 patients with adenoacanthoma was 100%,which suggested that the two sub- pathologic types had less malignant biological activity .

• 19例粘液腺癌及 5 6例角化腺癌的 5年存活率均达到 10 0%25 ,说明该两种病理类型具有较低的恶性生物学行为 ;