Juxta-articular Myxoma
Definition
- Generally hypocellular, hypovascular, bland pure myxoid lesion arising adjacent to a large joint
Diagnostic Criteria
- Adjacent to a large joint
- Grossly circumscribed, microscopically infiltrative
- Generally hypocellular and hypovascular
- Abundant myxoid matrix
- Areas of increased cellularity and vascularity may be seen
- Cytologically bland
- Small stellate or spindled cells
- No pleomorphism
- No atypia, mitoses or necrosis
- May have focal inflammation or hemorrhage
Richard L Kempson MD
Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342
Original posting:: February 3, 2007
