Dermoscopy of trichofolliculoma: a rare hair follicle hamartoma

Trichofolliculoma Mimicking Squamous Cell Carcinoma

“…These projections correlated histopathologically with the nests of cells radiating from a follicular epithelium [1]. Garcia-Garcia and colleagues described different dermoscopic features that included a well-defined bluish nodule with a whitepink central area, shiny white structures, dotted vessels, and a central scale in one patient [2]. Histopathologically, the early stages demonstrated few secondary vellus hair follicles originating from a primary follicle, whereas mature lesions showed increased number of vellus hair follicles.…”

“…Histopathologically, the early stages demonstrated few secondary vellus hair follicles originating from a primary follicle, whereas mature lesions showed increased number of vellus hair follicles. In later stages, thickened primary follicle with fewer secondary follicles could be seen [2].…”

A Rare Cutaneous Hamartomatous Adnexal Tumor: Trichofolliculoma

“…In the literature, a "fire-works" pattern consisting of a central brown region with radial brown projections has been described in a 4-monthold lesion [14]. In another 1-year-old lesion, dermoscopic examination revealed a well-defined, firm, bluish nodule with a white-pink central area, bright white structures, punctate veins, and a central scale [15]. Since the change in the differentiation and histological appearance of the lesion over time can be reflected in the dermoscopic examination, there are no standardized dermoscopic findings.…”

‘Mouldy peach’ dermoscopic pattern in trichofolliculoma

“…1 It has also been described with other terms, such as creeping hair, creeping eruption, embedded hair, migrating hair, bristle migrans, burrowing hair, hair fragment in the skin, ingrowing hair, intradermal creeping of pubic hair, moving hair and cutaneous pili eruption. [2][3][4] The locations usually involve frictional…”