PMC5588443_01
Axial proton density-weighted (a) and T1-weighted (b) MR images showing unilocular PLC (asterisk) in spinoglenoid notch. Oblique sagittal (c) and oblique coronal (d) fat-saturated 3D VIBE MR arthrographic images showing massive tear of the posterior glenoid labrum (dotted arrows). The oblique coronal fat-saturated 3D VIBE MR arthrographic image also shows a SLAP lesion (dotted arrow) and humeral chondral defect (arrow). e Axial fat-suppressed T1-weighted MR arthrographic image shows contrast material extravasation inside uniloculated cyst. f Oblique sagittal fat-saturated 3D VIBE MR arthrographic image shows a 6-mm humeral chondral defect (arrow).
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F1
T1-weighted MR imaging of the shoulder showed a fluid-filled PLC that originated at the posterior portion of the glenoid bone that extended to the posterior superior labrum, including heterogeneous signal intensities within the cyst (fig. 1a, b). The cyst was approximately 20 x 35 x 45 mm. The defect was extended to the superior labrum and associated with a SLAP lesion (fig. 1c, d). The contrast agent extravasated from the labral defects to the posterior PLC (fig. 1e). In addition to these arthrographic findings, three-dimensional volumetric interpolated breath-held examination (VIBE) as a sequence on MR angiography revealed the chondral defect in a region of about 6 mm at the inferior portion of the humeral head sequence (fig. 1f).