All about cystic lesions at the shoulder: Systematic review related to adjacent structures with MR imaging and illustration, with or without pathology.

Congress:

ESSR 2019

Poster Number:

P-0104

Type:

Educational Poster

Keywords:

Education, MR, Musculoskeletal joint, Anatomy, Cysts

Authors:

S. Lee¹, E. K. Khil², S.-Y. Park¹, J.-A. Choi³, M. H. Lee⁴; ¹Gyeonggi-do/KR, ²Hwaseong-si/KR, ³Seongnam, Gyeonggi-do/KR, ⁴Seoul/KR

DOI:

10.26044/essr2019/P-0104

DOI-Link:

https://dx.doi.org/10.26044/essr2019/P-0104

Fig. 1: Bursa aorund the shoulder joint: 1. subacromial-subdeltoid bursa 2....

Fig. 2: Subacromial-subdeltoid bursa: The SA-SD bursa extends between the acromion and...

Fig. 3: Subacromial-subdeltoid bursa: 73 year-old male with partial thickness...

Fig. 4: Subscapular bursa = superior subscapular recess: The subscapular recess lies...

Learning objectives

1. To review the MR imaging of bursae at the shoulder with illustration 2. To present MR imaging and illustration of various cystic lesions at the shoulder may encountered at daily practice, with relation to rotator cuff, glenoid labrum, nerves, bone and joint with or without pathology

Background

Cysts or fluid collection around the shoulder are very common. Most are benign and related to the collection of fluid in the bursa, synovium or ganglia. MRI can help delineate the location of the cystic lesion in relation to anatomic structures. Knowledge of the specific anatomic location of the lesion can help make a correct diagnosis.

Imaging findings OR Procedure Details

I. Bursa around the shoulder (Fig1) Awareness of location and extent of juxta-articular bursa is important in order to identify or exclude significant pathology. 1. Subacromial-subdeltoid bursa Location (Fig2) ..between the rotator cuff tendons and the coracoacromial arch ..between the rotator cuff tendons and the deltoid muscle Function ..Covers a large surface area and facilitates movement Clinical significancy (Fig 3) 1) Rotator cuff tear 2) Inflammatory or crystal deposition disease 3) Septic bursitis 2. Subscapular bursa = superior subscapular recess Location (Fig4): ..between the scapula...

Conclusion

1. Know variable cause of cystic lesions around the shoulder 2. Familiarize with typical imaging feature of cystic lesions on MR, including fluid collection in normal bursae and pathologic cysts

References

1. Manvar AM, Kamireddi A, Bhalani SM, Major NM. Clinical significance of intramuscular cysts in the rotator cuff and their relationship to full- and partial-thickness rotator cuff tears. AJR Am J Roentgenol. 2009; 192(3):719-724. 2. Kassarjian A, Torriani M, Ouellette H, Palmer WE. Intramuscular rotator cuff cysts: association with tendon tears on MRI and arthroscopy. AJR Am J Roentgenol. 2005; 185(1):160-165. 3. Mellado JM, Salvado E, Camins A, Ramos A, Merino X, Calmet J, et al. Fluid collections and juxta-articular cystic lesions of the shoulder:...

Personal Information

Seun Ah Lee, Department of radiology, Hallym University Dongtan sacred Heart Hospital-Gyeonggi-do/KR