FIG 3. 61-year-old woman with status post acute sialadenitis.

A and B, Oblique sagittal-coronal MR sialogram (A) and lateral digital subtraction sialogram (B) reveal normal ductal anatomy without abnormal findings. However, due to higher spatial resolution, the digital subtraction sialogram shows better delineation of ductal morphology and enables visualization of peripheral intraglandular ductal branches. Because of its normal small size, the Stensen duct shows some focal signal voids in A (compare with the enlarged duct in Fig 2B).