case_images: PMC3420520_01
case_images: Nonhealing extraoral sinus in the submental region.
case_images: CRIM.PATHOLOGY2011-159501.001.jpg
case_images: PMC3420520_01_CRIM.PATHOLOGY2011-159501.001.jpg
case_images: fig1
case_images: A 25-year-old male patient was referred to a private dental clinic by a dermatologist to rule out any dental cause for a nonhealing extraoral sinus in the submental region (Figure 1).
case_images: Crowding and traumatic occlusion.
case_images: CRIM.PATHOLOGY2011-159501.002.jpg
case_images: PMC3420520_01_CRIM.PATHOLOGY2011-159501.002.jpg
case_images: fig2
case_images: He had traumatic occlusion causing attrition (Figure 2).
case_images: A large, dark radiolucency at the periapex of mandibular left central incisor.
case_images: CRIM.PATHOLOGY2011-159501.003.jpg
case_images: PMC3420520_01_CRIM.PATHOLOGY2011-159501.003.jpg
case_images: fig3
case_images: Intraoral periapical radiograph was taken which showed a large dark radiolucency at periapex of lower left lateral incisor (Figure 3).
case_images: Orthopantomograph shows multiple radiolucencies associated with mandibular anterior region, maxillary right and left as well as mandibular left impacted third molar teeth.
case_images: CRIM.PATHOLOGY2011-159501.004.jpg
case_images: PMC3420520_01_CRIM.PATHOLOGY2011-159501.004.jpg
case_images: fig4
case_images: Right maxillary canine and right mandibular third molar too were impacted (Figure 4).
case_images: The epithelial lining has 6-8 cell thickness and palisaded basal cell layer.
case_images: CRIM.PATHOLOGY2011-159501.005.jpg
case_images: PMC3420520_01_CRIM.PATHOLOGY2011-159501.005.jpg
case_images: fig5
case_images: The palisading appearance of the basal cells was evident, thus the lesion is confirmed to be OKC (Figure 5).