ABSTRACT
Abstract: Proliferating trichilemmal cyst is an uncommon neoplasm arising from the follicular isthmus, whose histopathological hallmark is the presence of trichilemmal keratinization. We describe a case of proliferating trichilemmal cyst in a 57-year-old woman with a broad clinical, radiological, macroscopic and microscopic correlation.
Subject(s)
Humans , Female , Middle Aged , Scalp/pathology , Scalp/diagnostic imaging , Epidermal Cyst/pathology , Epidermal Cyst/diagnostic imaging , Scalp/surgery , Ultrasonography , Biopsy, Fine-Needle , Diagnosis, Differential , Epidermal Cyst/surgeryABSTRACT
Abstract: Lichen simplex chronicus is a skin disease that mostly affects female patients, with a peak incidence between ages 35 and 50 years. On the scalp, it appears as a single or multiple oval lesions, showing scaling and hair shaft loss or breakage. An important dermoscopic feature of the disease are the "broom fibers." Histopathology reveals the "hamburger" and the "gear wheel" signs. The aim of this report is to demonstrate a case of lichen simplex chronicus on the scalp with typical and exuberant clinical, dermoscopic, and histopathological findings.