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The abnormality is a large extramedullary intradural mass at T1 level markedly compressing the spinal cord. It shows homogeneous enhancement, heterogeneous high-signal on the T2-weighted sequence and measures 22 x 12 mm in cross-section, 23 mm in length. The rest of the spinal cord is unremarkable. Minimal extension through the left C7-T1 neural foramen.
The intervertebral discs are diffusely desiccated, with osteochondral bars in the mid cervical segment causing minor canal stenosis without spinal cord compression. Moderate bilateral foraminal stenosis at C4-5 to C6-7 levels from uncovertebral osteophytes.
Severe spinal cord compression at T1 by large left spinal canal mass consistent with meningioma. A nerve sheath tumour is in the main differential diagnosis.