Type:
Educational Exhibit
Keywords:
Musculoskeletal joint, Musculoskeletal soft tissue, Musculoskeletal system, MR, Ultrasound, CT, Contrast agent-intravenous, Diagnostic procedure, Pathology
Authors:
V. Jugovec, T. Jordan, A. K. Limpel Novak; Ljubljana/SI
DOI:
10.26044/ecr2019/C-2999
Background
TSGCTs are rare,
predominantly benign proliferations of synovial tissue lining joints,
bursas or tendon sheats and can,
therefore,
be classified according to their site as intraarticular and extraarticular lesions.
The World Health Organization Classification of Tumors of Soft Tissue and Bone (2013) divides the entity according to the growth pattern into two groups:
- a more common localized form affecting only a portion of the synovium and predominantly involving the digits and wrists;
- a less frequent diffuse form (previously known as pigmented villonodular synovitis) involving substantial parts of the synovium primarily affecting large joints (knee,
hip,
ankle).
The diffuse form is a more aggressive and destructive disorder with higher recurrence rates and may in rare instances include a malignant component.
Therefore prompt diagnosis and treatment are essential.