Images in Clinical Medicine
Synovial Hemangioma
N Engl J Med 1999; 341:336July 29, 1999
- Article
Figure 1 A 19-year-old man presented with a five-year history of a gradually increasing mass on the lateral aspect of his right knee. He first noted this mass after receiving a direct blow to the area while playing ice hockey. Magnetic resonance imaging showed a hyperintense synovial lesion with bulging or distention of the lateral capsule and retinacular complex (arrow in Panel A); the bones and menisci were normal. Arthroscopy revealed a pedunculated, grape-like lesion (arrow in Panel B) arising from the synovium in the lateral parapatellar gutter (arrowhead). The biopsy showed thick-walled, prominent vascular channels surrounded by fibrous tissue and areas of hemosiderosis consistent with the presence of a cavernous hemangioma. The patient declined further surgery and was well at the most recent follow-up visit.
Denis Macdonald, M.D.
Jeffrey Gollish, M.D.
Orthopaedic and Arthritic Hospital, Toronto, ON M4Y 1H1, Canada- Citing Articles (2)
