Abstract
Epidermoid cysts appear due to an aberrant ectoderm all over the body, especially in the ovaries and the rectum. In the head and neck region, it is mainly reported to appear on the floor of the mouth and the base of the tongue. However, it is rare for such tumors to appear in the nasal or sinus region. In this manuscript, we report the findings of a case in which such a tumor appeared in the maxillary sinus and also destroyed the maxillary bone and thus was mistaken for a malignant tumor.
