Otitis externa other imaging findings: Difference between revisions
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{{Otitis externa}} | {{Otitis externa}} | ||
{{CMG}} {{AE}} {{LRO}} | |||
==Overview== | |||
==Other imaging findings== | |||
===Nuclear Scintigraphy=== | |||
*For malignant otitis externa, [[Technetium-99m]]-based [[scintigraphy]] will reveal the extent of the infectious damage on the [[temporal]] and intracranial bones.<ref name="pmid22696730">{{cite journal |vauthors=Leahy TW, Sader C |title=A rare case of bilateral malignant otitis externa and osteomyelitis with lower cranial nerve sequelae |journal=BMJ Case Rep |volume=2011 |issue= |pages= |year=2011 |pmid=22696730 |pmc=3094778 |doi=10.1136/bcr.03.2011.3957 |url=}}</ref> | |||
**[[Tc-99m]] analysis will display findings of activity of [[osteoblast]] cells that are indicative of infection from malignant otitis externa.<ref name="pmid24963511">{{cite journal |vauthors=Chen JC, Yeh CF, Shiao AS, Tu TY |title=Temporal bone osteomyelitis: the relationship with malignant otitis externa, the diagnostic dilemma, and changing trends |journal=ScientificWorldJournal |volume=2014 |issue= |pages=591714 |year=2014 |pmid=24963511 |pmc=4052568 |doi=10.1155/2014/591714 |url=}}</ref> | |||
*Additionally, [[Gallium Citrate Ga 67]] scans will reveal extent of the spread of malignant otitis externa infection. | |||
**The [[gallium citrate]] is absorbed by the macrophages and reticular endothelial cells in the areas of the [[temporal]] or intracranial bones that display markers for [[inflammation]]. | |||
*[[Gallium Citrate Ga 67]] is preferred to [[Technetium-99m]] for scintigraphic scans due to the tendency of Tc-99m to be overly sensitive to osteoblast activity, often resulting in positive malignant otitis externa results prematurely, as well as displaying lingering positive results after the infection is treated. | |||
==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} | ||
[[Category:Disease]] | [[Category:Disease]] | ||
[[Category:Infectious disease]] | [[Category:Infectious disease]] | ||
Revision as of 19:24, 25 May 2016
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Luke Rusowicz-Orazem, B.S.
Overview
Other imaging findings
Nuclear Scintigraphy
- For malignant otitis externa, Technetium-99m-based scintigraphy will reveal the extent of the infectious damage on the temporal and intracranial bones.[1]
- Tc-99m analysis will display findings of activity of osteoblast cells that are indicative of infection from malignant otitis externa.[2]
- Additionally, Gallium Citrate Ga 67 scans will reveal extent of the spread of malignant otitis externa infection.
- The gallium citrate is absorbed by the macrophages and reticular endothelial cells in the areas of the temporal or intracranial bones that display markers for inflammation.
- Gallium Citrate Ga 67 is preferred to Technetium-99m for scintigraphic scans due to the tendency of Tc-99m to be overly sensitive to osteoblast activity, often resulting in positive malignant otitis externa results prematurely, as well as displaying lingering positive results after the infection is treated.
References
- ↑ Leahy TW, Sader C (2011). "A rare case of bilateral malignant otitis externa and osteomyelitis with lower cranial nerve sequelae". BMJ Case Rep. 2011. doi:10.1136/bcr.03.2011.3957. PMC 3094778. PMID 22696730.
- ↑ Chen JC, Yeh CF, Shiao AS, Tu TY (2014). "Temporal bone osteomyelitis: the relationship with malignant otitis externa, the diagnostic dilemma, and changing trends". ScientificWorldJournal. 2014: 591714. doi:10.1155/2014/591714. PMC 4052568. PMID 24963511.