Subchondral Cysts of the Humeral Head: MR Imaging Findings
Journal of the Korean Radiological Society
;
: 329-332, 1999.
Article
in Korean
| WPRIM
| ID: wpr-42071
ABSTRACT
PURPOSE:
To evaluate the findings of subchondral cyst of the humeral head, as seen on shoulder MRarthrography MATERIALS ANDMETHODS:
Sixty-three patients( MF=621 ; 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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Shoulder
/
Bone Cysts
/
Magnetic Resonance Imaging
/
Incidence
/
Retrospective Studies
/
Joint Dislocations
/
Humeral Head
/
Injections, Intra-Articular
/
Joints
Type of study:
Diagnostic study
/
Incidence study
/
Observational study
/
Prognostic study
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1999
Type:
Article
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