Nodular Tenosynovitis


Nodular Tenosynovitis, Tenosynovial Giant Cell Tumor

  • See Also
  • Definitions
  1. Tenosynovial Giant Cell Tumor (Nodular Tenosynovitis)
    1. Lobulated benign tumor that encasing finger or toe tendons, and grows slowly over the course of years
  • Findings
  1. Swelling overlying the tendons of the finger (most common) or toes
  2. Second finger is most commonly affected
  • Labs
  1. Histology
    1. Mononuclear cells
    2. Multinucleated Osteoclast-like giant cells
    3. Hemosiderin-laden Macrophages
    4. Foam cells
    5. Inflammatory infiltrate
  • Imaging
  1. XRay
    1. May demonstrate bony erosions
  2. Ultrasound
    1. Small growth that does not attach to tendon
  3. MRI
    1. T1 with low signal compared with Muscle
    2. T2 with hemosiderin deposition
  • Management
  1. Surgical resection
    1. Recurrs in up to 15% of cases