1. Figure 26c. (a, b) SGN cyst in a 28-year-old man with left shoulder pain and a posterior-superior labral tear. (a) Long-axis US image obtained over the left posterior region of the shoulder shows a large multilobulated hypoechoic cyst (thin arrows), with low-level echoes occupying the SGN (dashed line). (b) Oblique axial T2-weighted MR image (flipped vertically) of the left shoulder shows a multilobulated paralabral cyst (solid arrow) at the SGN in conjunction with a posterior-superior labral tear (dashed arrow). (c) In a companion case, the arthroscopic image obtained in a 52-year-old man with chronic shoulder pain and an SGN cyst shows a large cyst (arrows) in the setting of a posterior labral tear. GL = glenoid.