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Disease / syndrome / tumor / condition
Region of interest
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1. Benign cyst or tumor in the right zygomatic bone
A well-defined, unilocular entity with a corticated periphery is present in the right zygomatic bone. The overall shape of the entity conforms to that of the zygomatic bone, but mild expansion of the bone has occurred. The medial wall of the entity is continuous with the defect in the lateral wall of the maxillary sinus that was the site of a former surgical access. The overall radiographic appearance is suggestive of a benign cyst or tumor, which may have arisen secondary to the surgical access of the right maxillary sinus, such as a surgical ciliated cyst, or the extension of a sinus mucocele into the zygomatic bone.
Axial views of right maxillary sinus and zygomatic bone
These axial cross-sectional images demonstrate the well-defined corticated periphery of the radiolucent entity in the right zygomatic bone. Note the continuity of the mesial aspect of the lesion with the defect in the lateral wall of the right maxillary sinus. This is supportive of the diagnosis of a lesion originating secondary to the history of surgical access. Note the mild expansion of the zygomatic bone by the lesion, and the conformation of the shape of the lesion to that of the zygomatic bone.
Sagittal views of zygomatic bone
The sagittal cross-sectional images demonstrate the extension of the lesion throughout the right zygomatic bone. Soft tissue overlying it occupies the entire internal aspect of the lesion.
Coronal views of right zygomatic bone
These coronal cross-sectional images demonstrate the extension of the inferior border of the right zygomatic bone. The oral floor remains intact adjacent to the lesion.
2. Persistent bone defect in the lateral wall of the right maxillary sinus
A persistent bone defect is present in the lateral wall of the right maxillary sinus. Moderate mucositis is present in the hypoplastic right maxillary sinus.
Axial views of maxillary sinuses
These axial cross-sectional images demonstrate the mucositis that is present in both maxillary sinuses, as well as the post-surgical appearance of the lateral region of the right maxillary sinus.
Coronal views of maxilla
These coronal cross-sectional images demonstrate the normal appearance of the nasal cavity, as well as the asymmetric appearances of the maxillary sinuses. Graft material has been displaced into the posterior superior aspect of the right maxillary sinus.
3. Mild left maxillary sinusitis
Mild sinusitis is present in the left maxillary sinus. This is an incidental finding with no clinical significance.
4. Displaced graft material in posterior superior aspect of right maxillary sinus
Granular graft material is present in the posterior superior aspect of the right maxillary sinus. This graft material appears to be partially osseointegrated in this region. Sinus mucosa overlies this material.