Khodamorad Jamshidi - ShafaYahyaian Hopital, Iran University of Medical Sciences, Tehran, Iran
Hooman Yahazadeh - ShafaYahyaian Hopital, Iran University of Medical Sciences, Tehran, Iran
Abolfazl Bagherifard - ShafaYahyaian Hopital, Iran University of Medical Sciences, Tehran, Iran

  Periarticular cyst and cystic soft tissue lesion around the knee are common. Synovial sarcoma is a rare and malignant soft tissue tumor accounting for approximately ۵% of soft tissue sarcoma. A case is presented where a lesion adjacent to the joint line of the knee was diagnosed clinically and on imaging as a meniscal cyst. MRI signal was homogenous and no concomitant meniscal tears were seen. The tissue diagnosis was monophasic synovial sarcoma.

knee, Meniscal cyst, Synovial sarcoma