Mucosal keratocyst of buccal mucosa: A rare entity.

The odontogenic keratocyst (OKC) is a developmental odontogenic cyst that is important due to its specific histopathologic features and clinical behavior. It is well known that the OKC arises from cell rests of the dental lamina. This cyst is important as it shows a different growth mechanism and biologic behavior from other common odontogenic cysts. In rare cases, OKCs occur in sites other than intraosseous sites. The most common location of peripheral OKC is the gingiva, but mucosal, epidermal and even intramuscular sites have also been described. The origin of peripheral OKCs is still under controversy. We, hereby, add a case of peripheral OKC located in the soft tissue of the buccal mucosa to the scarce literature consisting of only a few case reports and small case series of peripheral odontogenic cysts.