Malignant mixed tumor is a rare neoplasm of salivary gland.The patho-logical characteristic of this tumor is carci-noma within the benign pleomorphic adenoma.

• 摘要恶性混合瘤是一种少见的唾液腺恶性肿瘤，主要特徵就是病理切片上同时可见良性混合瘤和恶性细胞，且临床上时常复发。