<strong>Background:</strong> <em>Polygonum multiflorum</em> (brand name Fo-ti) is a Chinese herb used as an antioxidant, antiaging agent, and liver and kidney h
<strong>Background: </strong>Adenoid cystic carcinoma (ACC) refers to a salivary gland neoplasm. Tracheal adenoid cystic carcinoma that invades the tracheal pro