This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Which jaw cyst is pre malignant 
Select and explain. 
A. Radicular cyst, B. Dental cyst, C. Odontogenic keratocyst, D. Dentigerous cyst
C: Odontogenic keratocyst
Answer: C: Odontogenic keratocyst 
Explanation: Odontogenic Keratocyst Odontogenic keratocyst is locally aggressive and has a high rate of recurrence Most often diagnosed in patients between 10-40 years. Occur most commonly in males within the posterior mandible, paicularly in the region of 3rd molar tooth Radiographically present as welldefined unilocular or multilocular radiolucenciea. Odontogenic keratocyst are characterized by an epithelial lining that is parakeratinized & stratified It is characterized by basal layer of nealty arranges, palisaded, columnar and cuboidal cells above which are several layers of squamous epithelium. This lining has a high mitotic rate and rarely may become dysplastic and develop into squamous cell carcinoma Ref: Scott-Brown's otorhinolaryngology 7th edition Pgno :1924,1925