# Posttraumatic Cutaneous Meningioma with a “Meningiolipoma” Pattern Presenting as a Nasal Bridge Mass

## TL;DR

A rare case of a skin tumor resembling a meningioma, appearing on the nasal bridge after trauma, is reported and analyzed.

## Contribution

Presentation of a unique posttraumatic cutaneous meningioma with a 'meningiolipoma' pattern in an uncommon nasal bridge location.

## Key findings

- The tumor exhibited a 'meningiolipoma' pattern, a rare histological variant.
- No prior cases of cutaneous meningioma in the nasal bridge were identified in the literature.
- Diagnosis required a combination of imaging, histopathology, and immunohistochemistry.

## Abstract

Meningiomas are tumors originating from arachnoid meningothelial cells. Occasionally, meningiomas are identified outside the central nervous system, and are referred to as extracranial meningiomas (EMs). The vast majority of EMs are an extension from an intracranial or intraspinal tumor. However, primary EMs may arise from extracranial sites with the most common sites being the skin and scalp subcutis, which are further categorized as cutaneous meningiomas (CMs). CMs are rare cutaneous tumors with similar ultrastructural and cytologic findings compared to those of intracranial meningiomas, but with a wide range of histologic differences. Therefore, an assessment using a panel of investigative tools, including imaging, histopathology, and immunohistochemistry, is required to determine the diagnosis of CMs. Here, we report the case of a 64-year-old gentleman presenting with a posttraumatic well-circumscribed superficial mass overlying the right nasal bridge. We are unable to identify other cases arising in the nasal bridge.