# A Rare Hybrid Skin Cyst of the Scalp With Pilar and Apocrine Features

## TL;DR

A rare case of a hybrid skin cyst with both pilar and apocrine features was found on a 12-year-old girl's scalp and successfully treated.

## Contribution

This paper reports a rare hybrid skin cyst with combined pilar and apocrine features in a pediatric patient.

## Key findings

- A 12-year-old girl had a hybrid skin cyst on her scalp with pilar and apocrine features.
- The cyst was successfully managed through collaboration between plastic and neurosurgeons.
- Such hybrid cysts are rarely encountered in clinical practice.

## Abstract

Benign epithelial skin cysts containing multiple components of the folliculo-sebaceous apocrine unit are only rarely reported in the literature. Here, we describe a 12-year-old girl who presented with a cystic mass on the vertex of her scalp. Upon resection, it showed a hybrid benign skin cyst with interesting histological features of both pilar and apocrine differentiation. The clinicopathological and imaging findings of this unusual skin cyst, successfully managed by a plastic surgeon and neurosurgeon, are described. Pathologists and clinicians should be aware of this type of skin cyst rarely encountered in their clinical practice.