Schwannoma (Neurilemmoma). Ectopic Position in Maxillary Sinus

A Schwannoma (Neurilemmoma) is a benign nerve tumor arising from a myelinated nerve fibers sheath, that can appear in any part of the body. Forty-five percent of the cases occur in the head and neck region. Intraoral Schwannomas are rather uncommon, intranasal and intrasinus Schwannomas are even rarer (less than 1%). The clinical case reports a young, man 14-years-old male with a Neurilemmoma the left maxillary sinus, involving the left third molar. The reports include case information, radiological findings, the surgery treatment, the histological characteristics of this particular tumor, a differential diagnosis, the post-operation process, and a review of the available literature.