English abstract
Synovial haemangiomas are rare benign vascular proliferations arising in synovium-lined surfaces.
While the knee is by far the joint most commonly involved, this condition can also occur in the elbow. We report an
eight-year-old boy who presented to the National University of Malaysia Medical Centre, Kuala Lumpur, Malaysia,
in 2016 with a left elbow swelling of one year's duration. Magnetic resonance imaging showed a lobulated intra articular mass with intermediate signal intensity on T1-weighted imaging and low signal punctate and linear
structures within the hyperintense mass on T2-weighted imaging. In addition, there was heterogeneous yet avid
contrast enhancement on post-gadolinium contrast images. The mass had juxta-articular extension and bony
erosion to the coronoid process and the head of the radius. Synovial haemangiomas present a diagnostic dilemma.
This report highlights certain imaging characteristics to distinguish this entity from other differential diagnoses.
