to determine the mr criteria that are effective for differentiating intramedullary neoplasms from syringo- or hydromyelia , we reviewed mr scans made on prototype and commercial imagers of 33 patients with surgically confirmed cord abnormalities , including nine intramedullary neoplasms and 20 cysts ( syringo- or hydromyelia ) .
C0027651
neoplasms
C0010709
cysts