In the submandibular gland, the most common benign tumor is pleomorphic adenoma, while;the most common malignant tumor is adenoid cystic carcinoma.

• 下颌下腺最常见良性肿瘤是多形性腺瘤，最常见恶性肿瘤是腺样囊状癌，下颌下腺的恶性肌上皮瘤极为罕见。