人们已经注意到在被射线照射的人员中,包括原子弹存活者和接受放疗的口面部恶性肿瘤病人与未被照射的对照组相比较,唾腺肿瘤有增加的趋势。这个事实可能提示唾腺被照射后可使组成唾腺的某些细胞发生恶性变,或使唾腺某些细胞获得转变为瘤细胞的潜在能力。另一方面,如大家已清楚的唾腺被广泛照射对各种类型上皮,如腺泡、纹管和闰管 It has been noted that salivary gland tumors have an increased tendency among those irradiated by radiation, including survivors of atomic bombs and orthotopic malignancies receiving radiotherapy, compared with non-irradiated controls. This fact may suggest that salivary glands can cause certain cells that make up the salivary glands to undergo malignancy or allow certain cells of the salivary glands to acquire the potential to transform into neoplastic cells. On the other hand, as we all know, salivary glands are widely exposed to various types of epithelium, such as acinar, striated, and fistula