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Case 99887

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Referral category

Disease / syndrome / tumor / condition

Region of interest

3rd Quadrant

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Canaray 99887

1. Healing simple bone cyst in left mandibular body

There is a well-defined, delicately corticated, mixed radiolucent-radiopaque entity present within the left mandibular body. This entity is located apical to teeth 34 and 35, and extends to the superior cortex of the left inferior alveolar nerve canal. This entity demonstrates an internal structure composed of a sparse trabecular bone pattern distributed within a region of radiolucency that is comparable to soft tissue. Aside from mild thinning of the adjacent buccal and lingual cortical plates, this entity demonstrates no effects on its surrounding structures. The superior cortex of the mandibular nerve canal appears intact. These findings suggest the presence of a healing simple bone cyst in the left mandibular body. A follow-up CBCT examination in 12 months will help substantiate this interpretation.

Orthogonal measurements of the simple bone cyst

These orthogonal cross-sectional images demonstrate the approximate mesiodistal, buccolingual, and superoinferior dimensions of the healing simple bone cyst in the left mandibular body.

Axial views of the left mandibular body

These axial cross-sectional images demonstrate the well-defined and delicately corticated periphery of the cystic entity in the left mandibular body. The shape of this entity appears to conform to the overall shape of the mandible, without demonstrating any evidence of expansion.

Buccolingual views of left mandibular body

These buccolingual cross-sectional images demonstrate the mild thinning of the buccal and lingual cortical plates adjacent to this cystic entity. The buccal and lingual cortices appear intact.

Mesiodistal views of left mandibular body

These mesiodistal cross-sectional images demonstrate the presence of a sparse trabecular bone pattern contained within this cystic entity, which likely represents immature bone formation. The superior cortex of the left inferior alveolar nerve canal appears intact, which suggests that this entity did not arise from within the nerve canal. The periapical periodontal ligament spaces and lamina durae of teeth 34 and 35 appear normal and intact.

2. Root resorption + rarefying osteitis on tooth 37D

Tooth 38 is partially captured in this imaging volume and appears mesioangularly impacted. There is extensive external resorption of the distal aspect of the crown and distal root of tooth 37 due to its close proximity to the impacted tooth 38. This resorptive defect appears continuous with the pulp canal system of tooth 37. There is widening of the periodontal ligament space around the root apices of tooth 37, which suggests the presence of pulpal inflammatory disease. Extraction of both teeth 37 and 38 are indicated.