CONGENITAL SEBACEOUS CHORISTOMA OF THE TONGUE

Abstract

Choristoma is defined as a mass of normal tissues or cells in an abnormal location. Sebaceous glands have been reported to occur in various sites in the oral mucosa in up to 80% of the general population, but the isolated presence of sebaceous glands on the dorsum of the tongue is uncommon and the diagnosis of the sebaceous choristoma has been proposed. We report a case of a 10-year-old boy with an asymptomatic congenital papule on the dorsum of the tongue. The lesion had a smooth surface, was soft, and measured 0.3 × 0.3 cm. An excisional biopsy was performed and the histopathologic exam showed a mucosa fragment covered by parakeratinized and orthokeratinized squamous epithelium. Below the epithelium, sebaceous glands surrounded by lymphocytic inflammatory infiltrate were observed. After 8 months, there was no recurrence. As far as we know, this is the first congenital sebaceous choristoma of the tongue. Choristoma is defined as a mass of normal tissues or cells in an abnormal location. Sebaceous glands have been reported to occur in various sites in the oral mucosa in up to 80% of the general population, but the isolated presence of sebaceous glands on the dorsum of the tongue is uncommon and the diagnosis of the sebaceous choristoma has been proposed. We report a case of a 10-year-old boy with an asymptomatic congenital papule on the dorsum of the tongue. The lesion had a smooth surface, was soft, and measured 0.3 × 0.3 cm. An excisional biopsy was performed and the histopathologic exam showed a mucosa fragment covered by parakeratinized and orthokeratinized squamous epithelium. Below the epithelium, sebaceous glands surrounded by lymphocytic inflammatory infiltrate were observed. After 8 months, there was no recurrence. As far as we know, this is the first congenital sebaceous choristoma of the tongue.