INTRA - ARTICULAR SYNOVIAL GIANT CEL L TUMOR PRESENTING WITH MORRANT BAKER CYST - A CASE REPORT

The giant cell tumor of the synovium (GCT-) is a benign growth, which rarely occurs intra articularly. In this report, we describe a case of intra-articular GCT in the left knee joint. Clinically, the patient presented to our orthopedic clinic with anterior knee pain, accompanied by suprapatellar fullness and popliteal swelling, provisionally diagnosed as chronic synovitis of knee and Morrant Baker cyst X-ray didn’t show any bony abnormality, USG confirmed MorrantBaker cyst. The final diagnosis of GCT was made from evidence of typical histological findings revealing giant cells and hemosiderin-laden foam cells within a matrix of ovoid to polygonal cells. In this case report we stress that intra-articular GCT should be included in the differential diagnosis of a knee swelling, is encountered in patients presenting with knee pain and swelling in popliteal fossa.