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Tenosynovial giant cell tumor and its differential diagnosis in children
Emilio J Inarejos Clemente1, David Moreno Romo2, Ignasi Barber2
1Hospital Sant Joan de Déu Barcelona, Pg. Sant Joan de Deu, 2, Barcelona, 08950, Spain. emilioinarejos@gmail.com.
Insights
Tenosynovial giant cell tumor (TGCT) is a locally aggressive tumor in children, often affecting the knee and ankle. Early diagnosis via imaging and prompt surgical treatment are key to preventing joint damage and functional loss.
Area of Science:
- Orthopedics
- Radiology
- Pediatric Oncology
Background:
- Tenosynovial giant cell tumor (TGCT) is a benign, locally aggressive neoplasm impacting joints in both pediatric and adult populations.
- In children, TGCT commonly affects the knee and ankle, presenting with symptoms that can mimic other joint disorders, necessitating accurate diagnosis.
- Early identification and intervention are critical to prevent long-term joint damage and functional impairment in pediatric patients.
Purpose of the Study:
- To review the epidemiology, clinical presentation, and imaging characteristics of pediatric Tenosynovial Giant Cell Tumor (TGCT).
- To discuss the differential diagnoses for pediatric TGCT, highlighting key distinguishing features.
- To emphasize the role of multimodal imaging in the diagnosis and management of pediatric TGCT.
Main Methods:
- Review of current literature on pediatric Tenosynovial Giant Cell Tumor (TGCT).
- Analysis of diagnostic imaging modalities including ultrasound and Magnetic Resonance Imaging (MRI).
- Discussion of surgical treatment strategies for localized and diffuse TGCT.
Main Results:
- Ultrasound is a useful first-line imaging tool, while MRI is the gold standard for TGCT diagnosis, showing characteristic signal intensities and blooming artifacts.
- Advanced MRI techniques improve lesion characterization.
- Surgical resection, arthroscopic for localized and open synovectomy for diffuse disease, is the primary treatment.
Conclusions:
- Accurate and timely diagnosis of pediatric TGCT is essential for optimal patient outcomes.
- Multimodal imaging plays a crucial role in differentiating TGCT from other pediatric joint pathologies.
- Effective management involves a combination of advanced imaging and appropriate surgical intervention.
Abstract:
Tenosynovial giant cell tumor (TGCT) is a benign but locally aggressive synovial neoplasm that affects both adults and children. In pediatric patients, it commonly involves the knee and ankle, presenting with pain, swelling, and mechanical symptoms, which can mimic other joint disorders. Early and accurate identification is crucial to prevent joint damage and functional impairment. Ultrasound is the first-line imaging modality due to its accessibility and ability to assess synovial proliferation and vascularity, but MRI is the reference standard for diagnosis, showing characteristic low signal intensity on T1- and T2-weighted images and blooming artifact on gradient-echo images due to hemosiderin deposition. Advanced imaging techniques, such as diffusion-weighted imaging and dynamic contrast-enhanced MRI, further enhance lesion characterization. Treatment is primarily surgical, with arthroscopic resection preferred for localized TGCT and open synovectomy required for diffuse disease. This review explores the epidemiology, clinical presentation, imaging features, and treatment of pediatric TGCT, with an emphasis on the differential diagnosis, which includes juvenile idiopathic arthritis, hemophiliac arthropathy, venous malformation, primary synovial chondromatosis, synovial sarcoma, fibroma of the tendon sheath, desmoid-type fibromatosis, and epithelioid sarcoma. The role of multimodal imaging in diagnosis and management is also discussed.
