Otitis externa other imaging findings: Difference between revisions
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==Overview== | ==Overview== | ||
Other imaging findings to facilitate accurate diagnosis of malignant necrotizing otitis externa includes [[Technetium-99m]] and [[Gallium Citrate Ga 67]] scintigraphical nuclear imaging. [[Tc-99m]] analysis will | Other imaging findings to facilitate accurate diagnosis of malignant necrotizing otitis externa includes [[Technetium-99m]] and [[Gallium Citrate Ga 67]] scintigraphical nuclear imaging. [[Tc-99m]] analysis will demonstrate activity of [[osteoblast]] cells that are indicative of infection from malignant otitis externa. [[Gallium Citrate Ga 67]] scans will reveal the extent of the spread of malignant otitis externa infection by measuring the response of macrophages and reticular endothelial system in the areas of [[inflammation]] in the affected areas. [[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 false positive results, as well as displaying positive results after the infection is treated. | ||
==Other imaging findings== | ==Other imaging findings== | ||
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[[Category:Infectious disease]] | [[Category:Infectious disease]] | ||
[[Category:Inflammations]] | [[Category:Inflammations]] | ||
[[Category: | [[Category:FinalQCRequired]] | ||
{{WH}} | {{WH}} | ||
{{WS}} | {{WS}} | ||
Revision as of 23:03, 8 August 2016
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Otitis externa Microchapters |
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Otitis externa other imaging findings On the Web |
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American Roentgen Ray Society Images of Otitis externa other imaging findings |
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Risk calculators and risk factors for Otitis externa other imaging findings |
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 to facilitate accurate diagnosis of malignant necrotizing otitis externa includes Technetium-99m and Gallium Citrate Ga 67 scintigraphical nuclear imaging. Tc-99m analysis will demonstrate activity of osteoblast cells that are indicative of infection from malignant otitis externa. Gallium Citrate Ga 67 scans will reveal the extent of the spread of malignant otitis externa infection by measuring the response of macrophages and reticular endothelial system in the areas of inflammation in the affected areas. 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 false positive results, as well as displaying positive results after the infection is treated.
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.
- Ga 67 scans will provide more accurate findings regarding ongoing malignant otitis externa infection.
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.