Plunging Epidermoid Cyst of the Floor of the Mouth Mimicking a Ranula

Plunging epidermoid cyst of the floor of mouth is indeed an uncommon entity. A 34-year old Malay gentleman had presented to our centre with a floor of mouth lesion that extended into the submental region. Clinical findings and imaging studies pointed towards the impression of a plunging ranula. Histopathological examination of a completely excised mass via intraoral approach, confirmed the diagnosis of an epidermoid cyst. He was well on follow up with no subsequent recurrence. We discuss the nature of epidermoid cyst and its surgical management.