EURORAD ESR

Case 12493

The Geyser sign associated with AC joint cyst

Author(s)
Kathleen Ramirez Tucas, Herman M. Kroon

Leiden University Medical Center (LUMC), Leiden, The Netherlands.
Vall d'Hebron University Hospital, Barcelona, Spain.
Email:katramtuc@gmail.com
 
Patient
female, 87 year(s)
 
 
  • Figure 1
    Antero-posterior radiograph of the left shoulder

    Widened ACJ and a supraclavicular soft tissue mass (arrows) with gas bubbles inside (arrowhead).

     
    Area of Interest: Musculoskeletal joint; Musculoskeletal soft tissue; Musculoskeletal system; Imaging Technique: Plain radiographic studies; Procedure: eLearning; Special Focus: Cysts;
     
     
  • Figure 2
    Ultrasound of AC joint

    A & B: Ultrasound of the lesion reveals a complex and extensive cystic lesion with gas artefacts and negative Doppler flow.

     
    Area of Interest: Musculoskeletal joint; Musculoskeletal soft tissue; Musculoskeletal system; Imaging Technique: Ultrasound; Ultrasound-Colour Doppler; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 3
    T1 and T2 weighted images in sagittal plane

    Relation of the cyst with the widened ACJ (arrows).

     
    Area of Interest: Musculoskeletal joint; Musculoskeletal soft tissue; Musculoskeletal system; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
  • Figure 4
    Oblique coronal MRI of the right shoulder. Geyser sign depicted

    C:T1. D: T2. E: T2 (SPIR). F:T1 FS Gd. The communication of the cyst with the glenohumeral joint, through the ACJ into the subcutaneous tissue is depicted, peripheral enhancement and multiple gas bubbles.

     
    Area of Interest: Management; Musculoskeletal joint; Musculoskeletal soft tissue; Imaging Technique: MR; Procedure: Education; Special Focus: Cysts;
     
     
Widened ACJ and a supraclavicular soft tissue mass (arrows) with gas bubbles inside (arrowhead).
 
A & B: Ultrasound of the lesion reveals a complex and extensive cystic lesion with gas artefacts and negative Doppler flow.
 
Relation of the cyst with the widened ACJ (arrows).
 
C:T1. D: T2. E: T2 (SPIR). F:T1 FS Gd. The communication of the cyst with the glenohumeral joint, through the ACJ into the subcutaneous tissue is depicted, peripheral enhancement and multiple gas bubbles.
 
 
 
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