A radiolucent lesion crossing the midline in maxilla: a rare presentation of odontogenic keratocyst in young patient.

Odontogenic Keratocyst (OKC) is a developmental non-inflammatory odontogenic cyst which is proposed to be arising from cell rests of dental lamina. Among the jaw cysts OKCs account for third most common following radicular and dentigerous cyst. Most of the studies have stated that posterior part of the mandible is the most common site, but there are inconsistencies regarding the prominent location of OKCs in the maxilla. Very few studies and cases are reported with OKCs crossing maxillary midline. If do occur they are in older individuals. According to WHO reclassification, this cyst is considered as Keratocystic Odontogenic Tumour (KCOT) because of its neoplastic nature. This article describes a rare site of occurrence of this lesion especially in young patient.