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Patient demographics, presenting symptoms, and imaging findings
Patient Age (yr) Sex Presenting Symptoms^{^a} Trauma History History of Spine Surgery Level of Dorsal Indentation Increased T2WI Cord Signal Syrinx
A 31 F 9 No No T4 No No
B 63 M 2 No No T2 Yes Yes
C^{^b} 56 F 2, 3 No Yes T6 Yes Yes
D^{^b} 67 M 2, 3, 7 No No T7 Yes Yes
E^{^b} 56 F 2, 3 No No T3 Yes Yes
F 56 F 7 No No T4 Yes No
G^{^b} 45 M 2, 7 Yes Yes T5 Yes No
H 44 F 7, 8 Yes No T4 Yes Yes
I 44 F 2, 7 No No T6 No No
J^{^b} 51 F 7, 9 No No T4 Yes Yes
K 54 M 5, 8 No No T7 –^{^c} –^{^c}
L^{^b} 54 F 8 No No T4 Yes Yes
M 66 F 7 No Yes T4 Yes No
N^{^b} 56 M 2, 3 No No T7 No No
↵a 1 indicates lower extremity pain; 2, lower extremity paresthesia; 3, lower extremity weakness; 4, upper extremity pain; 5, upper extremity paresthesia; 6, upper extremity weakness; 7, back pain; 8, neck pain; 9, shoulder pain.
↵b Patients who underwent surgery.
↵c Cord signal and syringomyelia could not be assessed because only CT myelography was available for analysis.