Adenoid cystic carcinoma is the second most common primary malignant tumor of the tracheobronchial trees.
腺样囊性癌是第二个最常见的原发性恶性肿瘤的气管树木。
2
The most common primary malignant tumor is squamous cell carcinoma, with the second most common being adenoid cystic carcinoma arising from the salivary glands.
最常见的的原发恶性肿瘤是鳞状细胞癌，其次是起源于唾液腺的腺样囊腺癌。
3
Adenoid cystic carcinoma has special biological characteristics and the tumor cells perineural invasion is the main reason of recurrence after tumor resection.