All of the following statements about synovial cell sarcoma, are true, except -
Originate from synovial lining
Occur more often at extraarticular sites
Usually seen in patients less than 50 years of age
Knee and foot are common sites involved
The term synovial cell sarcoma' is however a misnomer as synovial cell sarcomas do not arise from synovium.
Most synovial sarcomas are extraarticular and only less than 10% are intraarticular.