Epidermal choristoma: a case series and review of the literature

Abstract

Epidermal choristoma is a rare, congenital lesion in which islands of ectopic skin are found within the oral cavity. They present as pigmented macules or papules on the tongue. Histologic appearances are characteristic and benign. We present three cases review the current literature and recommend observation of the lesion rather than complete excision should be considered as a reasonable management option.

Lingual Epidermal Choristoma: Ultrasonography as a Diagnostic Tool

“…The presence of sebaceous glands in the oral mucosa is not uncommon, but on the tongue is exceptional and is considered an EC [ 3 ]. Most cases present on the tongue in males before the age of 2 [ 2 ]. It is clinically characterized by one or multiple macules or papules unilaterally or in the midline dorsal tongue.…”

“…It is clinically characterized by one or multiple macules or papules unilaterally or in the midline dorsal tongue. Color varies from light to dark brown; therefore, it is usually misdiagnosed as a congenital melanotic macule [ 1 , 2 ]. The histopathological study shows the replacement of normal oral mucosal epithelium by stratified squamous epithelium, hyperkeratosis, pigmentation of the basal layer, abortive hair follicles, and sebaceous glands [ 1 ].…”

“…Epidermal choristoma (EC) is ectopic epidermal tissue. It is a rare benign lesion on the tongue that presents as solitary or multiple brown macules or papules [ 2 ]. Recent publications suggest clinical follow-up considering its benign course [ 2 ].…”

“…It is a rare benign lesion on the tongue that presents as solitary or multiple brown macules or papules [ 2 ]. Recent publications suggest clinical follow-up considering its benign course [ 2 ]. We report a patient with an EC with a 5-year follow-up and whose diagnosis was supported by high-definition ultrasonography.…”

“…Epidermal choristoma (EC) is ectopic epidermal tissue. It is a rare benign lesion on the tongue that presents as solitary or multiple brown macules or papules [2].…”