Subchondral Cysts of the Humeral Head: MR Imaging Findings
Journal of the Korean Radiological Society
; : 329-332, 1999.
Article
in Ko
| WPRIM
| ID: wpr-42071
Responsible library:
WPRO
ABSTRACT
PURPOSE: To evaluate the findings of subchondral cyst of the humeral head, as seen on shoulder MRarthrography MATERIALS AND METHODS: Sixty-three patients( M:F=62:1 ; mean age 23 years) who underwent shoulder MRarthrography between September 1996 and May 1998 were retrospectively reviewed. No patient had a history of eithershoulder dislocation or certain diseases known to be commonl accompanied by subchondral cysts. All MR images wereobtained using a 1.5 Tesla unit after intraarticular injection of 20ml of diluted contrast material. T1 andT2-weighted axial, oblique coronal, and oblique sagittal images were analysed for the presence, location, number,shape, size, and connection to the joint cavity of subchondral cysts. RESULTS: We identified 58 subchondral cystsin 43(71.7%) of 63 cases. All were located in the posterolateral portion of the humeral head, and on the physealline. Twenty-eight patients(65.1%) had one cyst, and 15(34.9%) had two. Thirty-four cysts(58.6%) were round orovoid in shape and, 2-8mm in diameter(average, 3.9mm) ; 24(41.4%) were lobulated and 3-10mm in diameter(average5.3mm). Fifty-three cysts(91.4%) were connected to the joint cavity. CONCLUSIONS: In symptomatic patients, the incidence of subchondral cyst of the humeral head was 71.7%. All were located in the posterolateral portion, andon the physeal line. Most subchondral cysts were connected with the joint cavity.
Key words
Full text:
1
Database:
WPRIM
Main subject:
Shoulder
/
Bone Cysts
/
Magnetic Resonance Imaging
/
Incidence
/
Retrospective Studies
/
Joint Dislocations
/
Humeral Head
/
Injections, Intra-Articular
/
Joints
Type of study:
Diagnostic_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
Limits:
Humans
Language:
Ko
Journal:
Journal of the Korean Radiological Society
Year:
1999
Document type:
Article