Acute presentation of an intraoral dermoid cyst causing airway compromise in a young child.

A 4-month-old boy presented with a cystic swelling at the floor of the mouth causing acute airway compromise. The only previous history of note, was a tongue tie release at 3 days old. CT scan suggested a dermoid cyst with extensive floor of mouth abscess. He had an excision of the cyst and drainage of the superimposed abscess and made a good recovery. The histology report revealed a dermoid cyst which is a rare diagnosis in a child, particularly within the oral cavity. Early treatment is required to remove these lesions especially when they cause airway compromise or swallowing difficulties. This is the first case to our knowledge which suggests tongue tie release procedures causes a predisposition to the development of dermoid cysts in the oral cavity. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.