Recurrent diffuse tenosynovial giant cell tumor of the posterior knee: a rare presentation with synovial herniation (Baker’s cyst) in a young patient

This case highlights the importance of accurate imaging, meticulous surgical planning, and a multidisciplinary approach in managing rare presentations of TGCT. Long-term follow-up and consideration of adjuvant therapies such as radiotherapy or systemic therapies, including Pexidartinib, remain essential to minimize recurrence and optimize outcomes.