Abstract
Odontogenic keratocysts (OKCs) are developmental odontogenic cysts of epithelial origin with aggressive behavior and a high recurrence rate. OKC can be formed in place of tooth, embrace the unerupted tooth, present in ascending ramous or present between roots of the teeth. OKC generally tends to grow in an anteroposterior direction within the medullary cavity of the bone without causing obvious bone expansion but in this case there was a large extra oral swelling along with extra oral sinus present. Hence OKC can be mistaken for any other cyst and tumour. Keywords: Odontogenic keratocysts, Unilocular.
Highlights
Odontogenic keratocysts (OKCs) are developmental odontogenic cysts of epithelial origin with aggressive behavior and a high recurrence rate. It was first described by Phillipsen in 1956, later in 1963 Pindborg and Hansen explained its histological criteria.[1]. It was classified under developmental odontogenic cyst of jaw by WHO in 1971 & 1992, it was reclassified and renamed as keratocystic odontogenic tumor (KCOT) in the WHO classifications due its aggressive behavior,[2,3] but later in 2017 it was again grouped into cystic lesion and reclassified in odontogenic keratocysts (OKCs).[4]
OKC tends to grow in an anteroposterior direction within the medullary cavity of the bone without causing obvious bone expansion
Earlier it was considered as primordial cyst but later keratocysts were grouped under separate cystic entity arising from Dental lamina or its remnants or extension of basal cells of overlying epithelium.[1]
Summary
Odontogenic keratocysts (OKCs) are developmental odontogenic cysts of epithelial origin with aggressive behavior and a high recurrence rate. On Extra Oral Examination A unilateral round to ovoid swelling is present on the middle and lower 1/3 of face extending supero inferiorly from right infraorbital margin to lower border of the mandible and Mesio distally it extends from the mid pupillary line to 1 cm anterior to tragus of ear Swelling was same as color of the facial skin measuring about 9 x 8 cm in size. It has a smooth surface, well defined edges and skin over swelling is smooth. Enucleation of the Cyst distal of 48 was done along with the extraction of 48 the patient was followed up after one month and the healing was found to be satisfactory with no tendency for recurrence. (Fig. 7, 8)
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