At arthroscopy, a 22-year-old woman with repeated spontaneous hemarthrosis of the knee was found to have a synovial hemangioma, which was removed by arthrotomy. In cases of spontaneous hemarthrosis without abnormal bleeding tendency, arthroscopy is recommended to identify and, if possible, treat the cause of bleeding, as repeated bleedings may damage the joint.

We present a case report of a rare synovial hemangioma of the knee. Magnetic resonance imaging (MRI) demonstrated typical signal characteristics and enhancement. Histologic findings were confirmatory. Imaging characteristics, differential diagnoses and classification are discussed. A review of the relevant literature is provided.

INTRODUCTION Synovial haemangioma is a rare intra-articular benign tumour, which may arise from any synovium-lined surface, but particularly in the knee joint. Synovial haemangioma originating from the anterior cruciate ligament has not been reported previously. CASE PRESENTATION A 34-year-old man presented with a history of intermittent knee pain, locking and swelling. CONCLUSION Knee intr...

Case report We report the case of a 2-year girl who presented, in 2007, lameness with swelling of her right knee. Her leg has been putted in plaster but pain remained intense one month after. Blood tests did not show any inflammatory syndrome and standards radiographies were normal. Synovial fluid ponction and synovial biopsy were performed and confirmed a non specific synovitis. These results ...