Conclusion: PLGA arises often in the palate minor salivary glands or parotid glands.Differential diagnosis should be made because it is easily be misdiagnosed as other tumors.

• 结论：多形性低度恶性腺癌易发生于软硬腭交界处和腮腺下极，易被误诊，临床上应注意与其它良恶性肿瘤进和鉴别诊断。