They occur most commonly in the third decade of life , with males being affected more often than females ( ratio around 1.2 : 1 ) .
Synovial sarcoma occurs in about 2 per 100,000 people a year .
people occur most commonly in the third decade of life , with males being affected more often than females ( ratio around 1.2 : 1 ) .
Synovial sarcoma occurs in about 2 per 100,000 people a year .