PT  - JOURNAL ARTICLE
AU  - Alan L. Williams
AU  - Victor M. Haughton
AU  - Kathleen W. Pojunas
AU  - David L. Daniels
AU  - David P. Kilgore
TI  - Differentiation of Intramedullary Neoplasms and Cysts by MR
DP  - 1987 May 01
TA  - American Journal of Neuroradiology
PG  - 527--532
VI  - 8
IP  - 3
4099  - http://www.ajnr.org/content/8/3/527.short
4100  - http://www.ajnr.org/content/8/3/527.full
SO  - Am. J. Neuroradiol.1987 May 01; 8
AB  - 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). Two radiologists who did not know the clinical and radiologic diagnoses were asked to evaluate the scans with respect to (1) cord expansion, (2) distinctness of the disease margin, (3) homogeneity, and (4) signal intensity. These observations were correlated with the proved diagnoses. The combination of distinct margins and uniform signal intensity equal to that of CSF correlated consistently (88%) with spinal cord cysts. Other combinations were less reliable for diagnosing a cyst or tumor.