2Dokuz Eylül Üniversitesi Ortopedi ve Travmatoloji AD, İzmir
3Dokuz Eylül Üniversitesi Radyodiyagnostik AD, İzmir
4Dokuz Eylül Üniversitesi Patoloji AD, İzmir Pigmented villonodular synovitis (PVNS) (=Tenosynovial giant cell tumour) is a rare benign tumour originating from joints, tendon sheaths or bursa membranes. Although general treatment modality is surgery, postoperative local recurrence rate varies between %8 and %56. Radiotherapy is recommended in the cases who have a high recurrence risk.
In this report, the experience of postoperative radiotherapy has been presented in two cases with a diagnosis of PVNS.
The first case is a patient with diffuse PVNS of the knee who was referred for postoperative radiotherapy after her fourth local recurrence. The second one has a localized PVNS in the distal part of lower extremity. Clinical and radiologic features of the disease, as well as treatment results have been emphasized in the light of the presentation of these cases and experience from retrospective series. Postoperative radiotherapy is a preventive treatment approach in cases with a high risk of recurrence after excision. The use of postoperative radiotherapy makes it possible both to reduce the recurrence risk and to project the joint function.
Keywords : Pigmented Villonodular Synovitis, Tenosynovial giant cell tumour, radiotherapy