Epidural abscess CT: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Epidural abscess}} | {{Epidural abscess}} | ||
{{CMG}} | {{CMG}} {{AE}} {{JS}}; {{AG}} | ||
==Overview== | ==Overview== | ||
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==Computed tomography== | |||
Computed tomography may be used as a secondary method of imaging in the diagnosis of epidural abscess. If [[MRI]] is not available, [[CT scan]] may serve as the primary imaging technique. | |||
===Intracranial Epidural Abscess=== | ===Intracranial Epidural Abscess=== | ||
On CT scan, the appearance of an intracranial epidural abscess resembles a crescent-shaped hypodense extraaxial lesion or a lens.<ref>{{Cite book | last1 = Longo | first1 = Dan L. (Dan Louis) | title = Harrison's principles of internal medici | date = 2012 | publisher = McGraw-Hill | location = New York | isbn = 978-0-07-174889-6 | pages = }}</ref> | |||
===Spinal Epidural Abscess=== | ===Spinal Epidural Abscess=== | ||
On CT scan, the appearance of a spinal epidural abscess is difficult to discern. While helpful to produce high-resolution axial tomograms of the [[spine]], being able to detect a possible encroachment of the [[spinal canal]] or air in the [[pus]] collection is difficult due to CT scan's insufficient capacity to differentiate densities of soft tissues.<ref name="Grewal2006">{{cite journal|last1=Grewal|first1=S.|title=Epidural abscesses|journal=British Journal of Anaesthesia|volume=96|issue=3|year=2006|pages=292–302|issn=0007-0912|doi=10.1093/bja/ael006}}</ref> It may be used to guide [[percutaneous]] drainage, alternatively to [[surgical]] drainage.<ref name="pmid12182793">{{cite journal| author=Lyu RK, Chen CJ, Tang LM, Chen ST| title=Spinal epidural abscess successfully treated with percutaneous, computed tomography-guided, needle aspiration and parenteral antibiotic therapy: case report and review of the literature. | journal=Neurosurgery | year= 2002 | volume= 51 | issue= 2 | pages= 509-12; discussion 512 | pmid=12182793 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12182793 }} </ref> | |||
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{{Reflist|2}} | {{Reflist|2}} | ||
[[Category:Infectious disease]] | [[Category:Infectious disease]] | ||
[[Category:Disease]] | [[Category:Disease]] | ||
[[Category:Neurology]] | [[Category:Neurology]] | ||
[[Category:Primary care]] | [[Category:Primary care]] | ||
Revision as of 18:53, 16 November 2015
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Epidural abscess Microchapters |
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Treatment |
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Case Studies |
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Epidural abscess CT On the Web |
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American Roentgen Ray Society Images of Epidural abscess CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]; Anthony Gallo, B.S. [3]
Overview
Computed tomography
Computed tomography may be used as a secondary method of imaging in the diagnosis of epidural abscess. If MRI is not available, CT scan may serve as the primary imaging technique.
Intracranial Epidural Abscess
On CT scan, the appearance of an intracranial epidural abscess resembles a crescent-shaped hypodense extraaxial lesion or a lens.[1]
Spinal Epidural Abscess
On CT scan, the appearance of a spinal epidural abscess is difficult to discern. While helpful to produce high-resolution axial tomograms of the spine, being able to detect a possible encroachment of the spinal canal or air in the pus collection is difficult due to CT scan's insufficient capacity to differentiate densities of soft tissues.[2] It may be used to guide percutaneous drainage, alternatively to surgical drainage.[3]
Image courtesy of Radiopaedia [4]
References
- ↑ Longo, Dan L. (Dan Louis) (2012). Harrison's principles of internal medici. New York: McGraw-Hill. ISBN 978-0-07-174889-6.
- ↑ Grewal, S. (2006). "Epidural abscesses". British Journal of Anaesthesia. 96 (3): 292–302. doi:10.1093/bja/ael006. ISSN 0007-0912.
- ↑ Lyu RK, Chen CJ, Tang LM, Chen ST (2002). "Spinal epidural abscess successfully treated with percutaneous, computed tomography-guided, needle aspiration and parenteral antibiotic therapy: case report and review of the literature". Neurosurgery. 51 (2): 509–12, discussion 512. PMID 12182793.