TECHNIQUE:  Routine cone beam computed tomography was performed from the mid orbits through the mandibular base.  Data was acquired as a volume acquisition and reconstructed in multiple planes.  No intravenous contrast was administered. Evaluation of soft tissues is somewhat limited by bone algorithm processing. 

Comparison:  None. 

Findings: 

Airway:   The paranasal sinuses are clear.  The osteomeatal units are widely patent.  There is no evidence of bony sclerosis or erosion. The airway is widely patent. 

Orbits:   The globes, intraconal, and extraconal structures are unremarkable. 

Oral Cavity:  The left submandibular gland is heterogeneous with interlobular edema.  Within the left submandibular duct there is a 5mm calcification with proximal dilation of the duct.  There is no inflammation surround the submandibular gland to suggest active inflammation or infection. 

TMJ:  There is no evidence of fracture, dislocation, or significant degenerative change. 

Other:  No other significant findings noted. 

IMPRESSION:  Sialolithiasis with a 5mm calcification obstructing the left submandibular gland duct.