Epidermoid cyst in the oral cavity is uncommon. It is even more rare to see an epidermoid cyst in the sublingual region. We report the case of a 30-year-old male presenting with a swelling in the floor of the mouth extending into the submental and submandibular regions. The midline swelling was painless, soft, and dome-shaped. CT scan contrast revealed the site and extent of swelling. The complete surgical excision of the lesion was performed via a transcervical approach. Histopathology revealed cystic fibrocollagenous tissue covered by squamous epithelium containing some keratin flakes.
Keywords: epidermoid inclusion cyst; giant epidermoid cyst; intraoral; plunging ranula; sublingual.
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