case_images: PMC3804142_01
case_images: (a) Clinical image. (b) Multilocular radiolucent lesion.
case_images: CRIM.DENTISTRY2013-672383.001.jpg
case_images: PMC3804142_01_CRIM.DENTISTRY2013-672383.001.jpg
case_images: fig1
case_images: A 73-year-old female was referred presenting a slight asymptomatic swelling on the right mandibular angle and ascending ramus of years of evolution (Figure 1(a)). Radiographically, the lesion appeared as a well-defined multilocular radiolucency on the right posterior mandible and ascending ramus (Figure 1(b)).
case_images: PMC3804142_02
case_images: (a) Unilocular radiolucent lesion distal to 4.8. (b) Fibrous connective tissue with a stratified epithelium with orthokeratosis lining.
case_images: CRIM.DENTISTRY2013-672383.002.jpg
case_images: PMC3804142_02_CRIM.DENTISTRY2013-672383.002.jpg
case_images: fig2
case_images: The orthopantomography shows an unilocular radiolucent lesion, posterior to the 4.8, extending to the ascending ramus (Figure 2(a)). In the histopathological analysis, a cystic lesion was recognized with a fibrous connective tissue capsule without inflammation, covered by a stratified epithelium with orthokeratosis and marked granular layer (Figure 2(b)).
case_images: PMC3804142_03
case_images: (a) Initial orthopantomography. (b) Fibrous connective tissue with a stratified epithelium with hyperorthokeratosis lining.
case_images: CRIM.DENTISTRY2013-672383.003.jpg
case_images: PMC3804142_03_CRIM.DENTISTRY2013-672383.003.jpg
case_images: fig3
case_images: A 61-year-old male who was on a routine dental follow-up presents with a well-defined radiolucent lesion, posterior to the right inferior third molar and extended to the ramus (4.8) on the radiographic exploration (Figure 3(a)).  The cavity was filled with keratin flakes (Figure 3(b)).