Recurrent diffuse tenosynovial giant cell tumor of the knee treated with adjuvant radiotherapy: A case report

INTRODUCTION: TGCT (tenosynovial giant cell tumor) is a mono-articular proliferative condition that begins in the synovial membranes. Diffuse TGCT (DTGCT) has more prominent symptoms with high risks of recurrency. CASE PRESENTATION: In this case, we presented a 32-year-old male with recurrent case of DTGCT. The patient has been treated with arthroscopic synovectomy with the recurrence of disease. The patient was finally treated by open synovectomy combined with arthroscopy followed by adjuvant radiotherapy. DISCUSSION: The aim of this case is to report the success of open synovectomy combined with arthroscopy followed by 31 cycle of adjuvant radiotherapy in the recurrent case of DTGCT. CONCLUSION: Open synovectomy combined with arthroscopic synovectomy followed by adjuvant RT is a promising treatment modality in patient with DTGCT.