Unusually Giant Sublingual Epidermoid Cyst: A Case Report

Introduction: epidermoid cysts are rare, slow‑growing, benign, developmental cysts, which are derived from abnormally situated ectodermal tissue. epidermoid cysts of the floor of the mouth represent <0.01% of all oral cysts. so far, only a few cases have been reported. case report: hereby, we present a case of a giant sublingual epidermoid cyst, which was completely asymptomatic upon presentation. however, due to its large size, it pushed the epiglottis posteriorly and created difficulty during intubation. the patient developed respiratory distress after its surgical excision and extubation, requiring tracheostomy post operatively. the patient recovered well and a successful weaning of tracheostomy was performed, giving the patient a healthy life. conclusion: epidermoid cyst is a rare differential diagnosis of sublingual swelling that should be kept in mind for large asymptomatic swellings in this region. the only symptom it can cause might be respiratory distress due to its large size. this can happen not only pre-operatively but also post-operatively and the surgeon should be ready for immediate tracheostomy.