PMC6744768_01
Initial thoracic magnetic resonance image (T2-WI) (a) Sagittal view - an intradural extramedullary cyst was located at the T7 level dorsal to the spinal cord. (b) Axial view, serial cross-section around T7 - the cyst compressed the spinal cord anteriorly. The high intensity of the cyst on T2-WI is consistent with a cerebrospinal fluid filling.
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F1
T2-weighted image is showed a high-intensity uniform cyst (filled with cerebral spinal) [Figure 1]. The myelogram further demonstrated a near complete block at the T7 level (e.g., intrathecal contrast only slowly passed the T7 level extending cephalad). The thoracic computed tomography myelography confirmed the presence of a uniformly filling arachnoid cyst [Figure 2a-c].
(a) Thoracic myelography (A-P image) - the contrast medium was blocked at the T7 level. (b) Thoracic axial computed tomography after myelography at the T7 level - the cyst was filled with contrast medium. (c) Thoracic sagittal computed tomography after myelography - the contrast medium filled both the subarachnoid space and the cyst uniformly.
SNI-10-102-g002.jpg
PMC6744768_01_SNI-10-102-g002.jpg
F2
T2-weighted image is showed a high-intensity uniform cyst (filled with cerebral spinal) [Figure 1]. The myelogram further demonstrated a near complete block at the T7 level (e.g., intrathecal contrast only slowly passed the T7 level extending cephalad). The thoracic computed tomography myelography confirmed the presence of a uniformly filling arachnoid cyst [Figure 2a-c].