Synovial hemangioma: A rare cause of chronic knee pain

Synovial hemangioma is a rare benign vascular tumor responsible for chronic knee pain and swelling. Given its non‐specific symptoms, synovial hemangioma is often misdiagnosed. We report a case of synovial hemangioma of bilateral knee joints occurring in a young military man. Synovial hemangioma is a rare benign vascular tumor responsible for chronic knee pain, swelling, and restricted motion. It is often misdiagnosed. MRI is the gold standard for diagnosis. Sclerotherapy is a promising conservative treatment.