Inverted Follicular Keratosis in the Post-Auricular Region: A Case Report

Abstract

Inverted follicular kera tosis is a rare, benign skin growth that can be difficult to diagnose under a microscope because it can resemble other benign and even malignant lesions. This case report describes a 53-year-old woman who had a small nodule behind her ear. The nodule was surgically removed and examined under a microscope. The microscopic features, such as the inward growth pattern of the cells and the presence of swirling structures called squamous eddies, led to the diagnosis of inverted follicular keratosis. This case highlights the importance of recognizing inverted follicular keratosis so that it can be distinguished from more serious skin conditions, particularly squamous cell carcinoma.

Keywords

• inverted growth pattern
• squamous cells
• basaloid cells and squamous eddies