Odontogenic cyst with verrucous proliferation

Abstract Verrucous proliferation in the lining of odontogenic cysts occurs infrequently. A search of the literature identified only four previously reported cases. This report presents the case of a 5-year-old female patient with an odontogenic cyst that exhibited verrucous proliferation. A biopsy was performed at another hospital's oral surgery centre for swelling of the right upper gingiva, which revealed papillary growth of an apparent intraosseous cyst lined with stratified squamous epithelium. The patient was referred to the author's hospital for definitive enucleation of the cystic lesion. However, it was difficult to classify this cyst according to the extant World Health Organization (WHO) classifications of odontogenic cysts due to the unusual morphology of its lining. According to the existing literature, the following will be only the fifth case reported of an odontogenic cyst with verrucous proliferation of its lining.