CTICasesParaspinal Cyst (Cystic Schwannoma)
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Imaging findings
A subtle extra-pleural interface was observed in the left paraspinal region on chest radiography, separate from the aortic and left upper lobe contours. Cross-sectional imaging demonstrated a cystic paraspinal lesion that appeared intimately attached to the nerve sheath. The lesion showed no connection to the spinal canal or the vertebrae. Surgical pathology was limited but identified it as a cyst.
Key takeaways
Cystic paraspinal lesions can be subtle on conventional radiography. When encountered, they should be evaluated with MRI to assess for nerve sheath involvement, as they may represent cystic schwannomas, which are relatively benign but can be complex to characterize definitively without surgical excision.
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