PMC3420520_01
Nonhealing extraoral sinus in the submental region.
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fig1
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).
Crowding and traumatic occlusion.
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fig2
He had traumatic occlusion causing attrition (Figure 2).
A large, dark radiolucency at the periapex of mandibular left central incisor.
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fig3
Intraoral periapical radiograph was taken which showed a large dark radiolucency at periapex of lower left lateral incisor (Figure 3).
Orthopantomograph shows multiple radiolucencies associated with mandibular anterior region, maxillary right and left as well as mandibular left impacted third molar teeth.
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fig4
Right maxillary canine and right mandibular third molar too were impacted (Figure 4).
The epithelial lining has 6-8 cell thickness and palisaded basal cell layer.
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fig5
The palisading appearance of the basal cells was evident, thus the lesion is confirmed to be OKC (Figure 5).