Pigmented Villonodular Synovitis Flashcards
1
Q
What is the most common location of PVNS?
A
Knee (80%), also in hip, shoulder, ankle
If extra-articular known as giant cell tumors of tendon sheath
2
Q
What are the demographics of PVNS?
A
Is an idiopathic monoarticular reactive synovitis most commonly occurring in ages 30-50 (though commonly tested in younger patients); half of patients report history of trauma to area
3
Q
What is a hallmark of PVNS?
A
recurrent atraumatic hemarthrosis
4
Q
What is the appearance of PVNS?
A
radiographs- can show cystic erosions
MRI- low intensity nodulatrity on T1, T2 (due to hemosiderin)
histology- hemosiderin stained giant cells
arthroscopic- frond like brownish synovium
5
Q
How is PVNS treated?
A
Total synovectomy (recurrence 30-50%), adjuvant radiation reduces recurrence to 10-25%
