Cartilaginous Choristoma of the Oral Cavity: A Rare Presentation in the Nasopharynx.

This case report describes a rare presentation of a cartilaginous choristoma of the oral cavity within the tonsillar fossa, emphasizing the importance of recognizing and differentiating this uncommon entity from more frequently encountered oral lesions. A comprehensive clinical and histopathological examination was conducted on a 30-year-old male patient who presented with a painless mass in the nasopharynx. An excisional biopsy was carried out, and a histopathological analysis was conducted to establish a definitive diagnosis. Histopathological examination demonstrated a cartilaginous choristoma, characterized by the presence of mature hyaline cartilage surrounded by the connective tissue. The patient underwent surgical excision of the lesion, and follow-up assessments indicated a favorable postoperative outcome without recurrence. Cartilaginous choristomas in the oral cavity are exceedingly rare. Awareness of this entity is crucial for accurate diagnosis and appropriate management, as it can mimic other more common oral lesions. This case report contributes to the limited literature on oral cartilaginous choristomas and underscores the significance of considering this entity in the differential diagnosis of oral mucosal masses.