Adenoid Cystic Carcinoma with Intracranial Extension.

Adenoid cystic carcinoma (ADCC) is a malignant tumor of salivary gland origin. ADCC of sinonasal tract is rare. We present a rare and unresectable case of sinonasal ADCC with intracranial extension in an 83-year-old man with the chief complaint of nasal congestion. Invasion to the maxillary sinus, nasopharynx, anterior cranial fossa, sella turcica and extension to cavernous sinus, dura mater and infratemporal fossa were evident on MRI and CT scan. The patient was treated only by palliative radiotherapy, but unfortunately, he died 3 months after the initial diagnosis.