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Disease / syndrome / tumor / condition
Region of interest
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1. Probable simple bone cyst in left posterior mandible: Biopsy recommended
A well-defined, delicately corticated radiolucency is present within the left posterior mandibular alveolar process and body adjacent to teeth 35, 36, and 37. The contiguous lingual cortical plate is thinned and mildly expanded, but remains intact. The buccal cortex, alveolar crest, and inferior mandibular border are preserved. The left mandibular nerve canal passes along the inferior aspect of this radiolucency, and the canal cortex is partially effaced. The lamina dura of the contiguous teeth are partially preserved adjacent to this radiolucency, and there are no signs of tooth displacement or resorption.
This radiographic appearance is most consistent with a simple bone cyst in the left posterior mandible. However, a biopsy and histopathologic evaluation are indicated to confirm this interpretation and to rule out the less likely possibility of a benign cyst or cystic tumor such as an odontogenic keratocyst.
Orthogonal measurements of radiolucency in left posterior mandible
These orthogonal cross-sectional images demonstrate the dimensions of the simple bone cyst from various perspectives.
Impacted tooth 38
Tooth 38 is horizontally impacted. The left mandibular nerve passes apical to the root apices. The follicle appears normal, and no signs of associated pathology are evident. No resorption is noted on tooth 37.
Impacted tooth 48
Tooth 48 is horizontally impacted. The right mandibular nerve passes apical to the root apices. The follicle appears normal, and no signs of associated pathology are evident. No resorption is noted on tooth 47.