Abstract Pigmented Villonodular Synovitis (PVNS), now commonly classified within the spectrum of tenosynovial giant cell tumors, is an uncommon proliferative disorder affecting the synovial lining of joints, bursae, and tendon sheaths. It is characterized by excessive synovial proliferation and hemosiderin accumulation, leading to progressive joint swelling, pain, stiffness, and restricted movement. The knee and hip are frequently involved, although other…