Scalpel sign (spinal cord)

Last revised by Rohit Sharma on 3 Apr 2024

Citation, DOI, disclosures and article data

Citation:

Gaillard F, Sharma R, Iqbal S, et al. Scalpel sign (spinal cord). Reference article, Radiopaedia.org (Accessed on 16 Apr 2024) https://doi.org/10.53347/rID-30903

DOI:

https://doi.org/10.53347/rID-30903

Permalink:

https://radiopaedia.org/articles/30903?iframe=true

rID:

30903

Article created:

8 Sep 2014, Frank Gaillard ◉ ◈

Disclosures:

At the time the article was created Frank Gaillard had no recorded disclosures.

View Frank Gaillard's current disclosures

Last revised:

3 Apr 2024, Rohit Sharma ◉

Disclosures:

At the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose.

View Rohit Sharma's current disclosures

Revisions:

16 times, by 9 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Spine

Sections:

Signs

Tags:

refs, cases

Synonyms:

Scalpel sign of dorsal thoracic arachnoid web

The scalpel sign is described in dorsal thoracic arachnoid web on sagittal MRI spine studies. It relates to focal distortion of the thoracic cord, appearing anteriorly displaced. The enlarged dorsal CSF space mimics the profile of a surgical scalpel.

It is helpful in distinguishing cases where the thoracic cord is focally anteriorly displaced, a finding seen in a couple of other conditions in addition to dorsal thoracic arachnoid web ², namely ventral cord herniation and the presence of a dorsal arachnoid cyst.

References

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Scalpel sign (spinal cord)

Citation, DOI, disclosures and article data

References

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