Synovial Haemangioma of the Elbow: A rare paediatric case and imaging dilemma

Han G. Hoe, Faizah M. Zaki, Abdul H. A. Rashid

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 intraarticular 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.


Keywords


Synovial Membrane; Hemangioma; Sarcoma; Magnetic Resonance Imaging; Diagnostic Imaging; Case Report; Malaysia.

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DOI: http://dx.doi.org/10.18295/squmj.2018.18.01.015

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Sultan Qaboos University Medical Journal, College of Medicine and Health Sciences, Sultan Qaboos University, PO Box 35, Postal Code 123, Al-Khod, Muscat, Oman

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