# Ablative Carbon Dioxide Laser as a Therapeutic Option for Multinucleated Cell Angiohistiocytoma

## TL;DR

A 56-year-old man with a rare skin condition called MCAH was successfully treated using a carbon dioxide laser, leading to reduced lesions and high satisfaction.

## Contribution

This case report demonstrates the successful use of an ablative carbon dioxide laser for treating MCAH, a novel therapeutic approach.

## Key findings

- Bilateral MCAH in a 56-year-old man was treated with an ablative carbon dioxide laser.
- The treatment resulted in significant lesion reduction and high patient satisfaction.

## Abstract

Multinucleated cell angiohistiocytoma (MCAH) is a rare and benign cutaneous proliferation of vascular and histiocytic elements, predominantly affecting the dorsal aspects of acral regions. Clinically, it presents as multiple, flat-topped, violaceous papules that are typically asymptomatic and unilateral, although bilateral cases have been reported. Dermoscopic examination often reveals a fine, whitish reticulated pattern within a violaceous background. Histopathologically, MCAH is characterized by a proliferation of small dermal vessels accompanied by multinucleated cells within a sclerotic stroma. The etiology remains uncertain, but it is generally considered a reactive process. Various treatment modalities have been previously reported with variable success. We report a case of bilateral MCAH in a 56-year-old man, successfully treated with an ablative carbon dioxide laser, resulting in significant lesion reduction and high patient satisfaction.