This 44-year-old female presents with right wrist pain. You | Figure 1

Case Overview

This 44-year-old female presents with right wrist pain. You are shown five images. A coronal proton density (image 1), a coronal proton density fat suppression (image 2), two sagittal proton density fat suppression (images 3 and 4), and an axial or short-axis proton density (image 5). A hyperintense mass around the ulna is obvious.

Questions

1. Q1 - With regard to the pink arrows in images 1 and 2, what do you think the significance is?
2. Q2 - What is your differential diagnosis for a septated cystic mass of the wrist?
3. Q3 - What are masses that are associated with a "tail sign"?
4. Q4 - What is the most common location for ganglion pseudocyst in the wrist? How about the second most common?