# Neurilemmoma Masquerading a Dermoid Cyst at the Inferior Mandibular Margin: An Unusual Clinical Occurrence

## TL;DR

A rare case where a neurilemmoma was initially mistaken for a dermoid cyst is described, highlighting diagnostic challenges in the submandibular region.

## Contribution

This paper presents a unique clinical case of neurilemmoma masquerading as a dermoid cyst, emphasizing diagnostic pitfalls in this anatomical region.

## Key findings

- The lesion was initially diagnosed as a dermoid cyst via ultrasonography but confirmed as neurilemmoma through histopathology.
- The mass was encapsulated and successfully excised without neurological deficits.
- The case underscores the importance of histopathological confirmation for accurate diagnosis in this region.

## Abstract

Neurilemmomas in the submental and submandibular region represent a diagnostic challenge, often mimicking more common superficial cysts. This is a case of neurilemmoma of the marginal mandibular branch of the facial nerve, initially diagnosed as a dermoid cyst via ultrasonography in a 65‐year‐old male with an 18‐month history of a painless 1.5‐cm mass. Histopathological examination of the excised lesion confirmed neurilemmoma. The mass was encapsulated and easily detached from the surrounding tissue; thus, successful excision without postoperative neurological deficits was ensured.