Abstract:Objective: To explore CT and MRI findings of spinal chondrosarcoma and to improve the understanding of this tumor. Methods: The imaging findings of 33 cases of chondrosarcoma of spine confirmed by clinical and pathological examination were analyzed and compared with the pathological results. Results: There were 33 cases of chondrosarcoma of the spine including 17 males and 16 females, with an average age of 41.4±11.6 years. Twenty-five cases, 5 cases and 3 cases were located in cervicothoracic spine, lumbar spine and sacrum spine, accounting for 75.8%, 15.2% and 3% respectively. Twenty-two cases, 9 cases and 2 cases were located in spine, paraspinal and intraspinal region, accounting for 66.7%, 27.3% and 6% respectively. Bone destruction was seen in 19 cases, but not in 14 cases, accounting for 57.6% and 42.4% respectively. The bone destruction was located in vertebral body, attachment and both of them, accounting for 15.1%, 27.3%, 42.4% respectively. Fifteen cases of tumor showed exogenous growth, accounting for 45.5%, 29 cases with paravertebral soft tissue mass. Fifteen cases of bone destruction were not in proportion to the soft tissue mass. Calcification was seen in 24 tumors, with various calcifications including punctate(9 cases, 37.5%), annular(2 cases, 8%) and irrgular(13 cases, 54.1%). Pathological resuts showed that 26 cases were common type, 5 cases were mesenchymal type, 1 case was transparent type and 1 case was dedifferentiated type. Conclusions: Chondrosarcoma of spine is mainly located in the cervicothoracic vertebra, rarely located in the lumbosacral vertebra, with or without bone destruction. Bone destruction is mostly involved in both vertebral body and attachment, tumors are rarely located in vertebral body and spinal canal. The tumor can be exogenous growth, and the paravertebral soft tissue masses and calcification are common.
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