Basaloid Follicular Hamartoma of the Eyelid: A Case Report and Literature Review about an Unusual Lesion in the Ocular Region

"Kissing" basaloid follicular hamartomas of the eyelid

Basaloid follicular hamartomas (BFH) are rare, benign, cutaneous adnexal tumors characterized by branching cords and anastomosing strands of basaloid cells in a loose, fibrous stroma. BFH exhibit variable clinical presentations although they are commonly observed as skin to flesh colored papules and are diagnosed based on histological features. Common systemic diseases associated with BFH include alopecia, myasthenia gravis, and palmoplantar pitting. BFH of the eyelid is extremely rare with only five cases reported in the literature to date. Congenital "kissing" lesions have only previously been reported with nevi. Here we present a novel case of congenital "kissing" basaloid follicular hamartoma of the right upper and right lower eyelid and histological examination revealed intradermal nodules of basaloid cells forming reticulated strands, pseudohorn cysts, mucinous stroma and palisading with CD34 and Bcl-2 expression in the stromal fibroblasts and periphery, respectively. This article is protected by copyright. All rights reserved.