Can pituitary adenoma stimulate an adenoid cystic carcinoma in the oral cavity: An intriguing case with literature review

Adenoid cystic carcinoma (ADCC) is a pathology aff ecting exocrine glands originating primarily from the minor salivary glands. Although rare in incidence, but there are cases of seeding of cells of adenoid cystic carcinoma into intracranial sites via diff erent routes. We report of an intriguing case of remote metastasis of an intracranial tumor in the pituitary diagnosed as pituitary adenoma which spread to the oral cavity as ADCC. According to our perspective, it is the fi rst reported case of seeding of cells from intracranial pituitary adenoma to intra-oral site manifesting as ADCC.