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. 2023 Apr 14;69(4):e20221019.
doi: 10.1590/1806-9282.20221019. eCollection 2023.

Magnetic resonance arthrographic demonstration of extension of labral defects in paraglenoid labral cysts

Serhat Kaya  1 , Hayri Ogul  2 , Ali Koksal  3   4 , Ahmet Koru  1 , Alper Kiziloglu  1 , Mecit Kantarci  1
Affiliations

Magnetic resonance arthrographic demonstration of extension of labral defects in paraglenoid labral cysts

Serhat Kaya et al. Rev Assoc Med Bras (1992). .

Abstract

Objective: This study aimed to investigate the extension of labral tears associated with paraglenoid labral cysts by magnetic resonance arthrography.

Methods: The magnetic resonance and magnetic resonance arthrography images of patients with paraglenoid labral cysts who presented to our clinic between 2016 and 2018 were examined. In patients with paraglenoid labral cysts, the location of the cysts, the relation between the cyst and the labrum, the location and extent of glenoid labrum damage, and whether there was contrast medium passage into the cysts were investigated. The accuracy of magnetic resonance arthrographic information was evaluated in patients undergoing arthroscopy.

Results: In this prospective study, a paraglenoid labral cyst was detected in 20 patients. In 16 patients, there was a defect in the labrum adjacent to the cyst. Seven of these cysts were adjacent to the posterior superior labrum. In 13 patients, there were contrast solution leak into the cyst. For the remaining seven patients, no contrast-medium passage was observed in the cyst. Three patients had sublabral recess anomalies. Two patients had rotator cuff muscle denervation atrophy accompanying the cysts. The cysts of these patients were larger compared to those of the other patients.

Conclusion: Paraglenoid labral cysts are frequently associated with the rupture of the adjacent labrum. In these patients, symptoms are generally accompanied by secondary labral pathologies. Magnetic resonance arthrography can be successfully used not only to demonstrate the association of the cyst with the joint capsule and labrum, but also to reliably demonstrate the presence and extension of labral defects.

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Conflict of interest statement

Conflicts of interest: the authors declare there is no conflicts of interest.

Figures

Figure 1
Figure 1. Schematic representation of the tears in the labrum. As: anterior-superior; Ai: anterior-inferior; Ps: posterior-superior; Pi: posterior-inferior.
Figure 2
Figure 2. Oblique coronal fat-saturated PD magnetic resonance image showing a cyst (star) with high signal intensity near the posterior superior labrum.
Figure 3
Figure 3. In the same patients mentioned in Figure 2, oblique coronal fat-saturated T1-weighted magnetic resonance arthrography image showing extravasation into a superior labral anterior posterior lesion and paralabral cyst (star).
See this image and copyright information in PMC

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