The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)

Fig. 5B. —Parotid gland actinomycosis with false-positive findings in 60-year-old woman. Unenhanced spin-echo T1-weighted MR image (800/13; 2 excitations) shows mass (arrows) in site corresponding to A. On magnetization transfer images (not shown), tumor had lesion-to-muscle magnetization transfer ratio of 1.59, which exceeded threshold. Lesion was incorrectly diagnosed as malignant tumor using combined criteria.