Carotid body tumor CT scan: Difference between revisions
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{{Carotid body tumor}} | {{Carotid body tumor}} | ||
{{CMG}}; {{AE}} {{Sahar}} | {{CMG}}; {{AE}} {{Sahar}} {{MV}} | ||
==Overview== | ==Overview== | ||
[[Cervical]] [[CT scan]] may be helpful in the [[diagnosis]] of the [[carotid body]] [[tumor]]. Findings on [[CT scan]] suggestive of/[[diagnostic]] of [[carotid body]] [[tumor]] include a well-defined, hypervascular mass which will show [[homogeneous]] and intense enhancement after [[intravenous]] [[administration]] of [[contrast]] dye. | |||
==CT scan== | |||
*The [[carotid body]] [[tumor]] has the following characteristic feature on the [[CT scan]]:<ref name="LeeOh2006">{{cite journal|last1=Lee|first1=Ki Yeol|last2=Oh|first2=Yu-Whan|last3=Noh|first3=Hyung Jun|last4=Lee|first4=Yu Jin|last5=Yong|first5=Hwan-Seok|last6=Kang|first6=Eun-Young|last7=Kim|first7=Kyeong Ah|last8=Lee|first8=Nam Joon|title=Extraadrenal Paragangliomas of the Body: Imaging Features|journal=American Journal of Roentgenology|volume=187|issue=2|year=2006|pages=492–504|issn=0361-803X|doi=10.2214/AJR.05.0370}}</ref> | |||
[ | **A [[well-defined]], [[soft tissue]] [[mass]] within the [[carotid]] space | ||
**The [[mass]] splays the [[Internal carotid artery|internal]] and [[external carotid arteries]] (Lyre sign) | |||
*Since the [[tumor]] is highly [[vascular]], It will show [[homogeneous]] and intense enhancement after [[intravenous]] [[administration]] of [[contrast]] dye. | |||
**large [[tumors]] tend to appear in-homogeneous with some areas of [[hemorrhage]] as well as [[necrosis]]. | |||
*The [[tumor]] usually is in the infrahyoid space, however, it may enlarge to an extent that be present in the [[suprahyoid]] space in 8% of the cases as well. | |||
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|[[image:Carotid-body-tumour-CT.jpg|thumb|400px|Case courtesy of Dr Mohammad Taghi Niknejad, Radiopaedia.org, rID: 60652]] | |||
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==CT | ==CT angiography== | ||
Findings [[diagnostic]] of [[carotid body]] [[tumor]] include:<ref name="WienekeSmith2009">{{cite journal|last1=Wieneke|first1=Jacqueline A.|last2=Smith|first2=Alice|title=Paraganglioma: Carotid Body Tumor|journal=Head and Neck Pathology|volume=3|issue=4|year=2009|pages=303–306|issn=1936-055X|doi=10.1007/s12105-009-0130-5}}</ref> | |||
*A hypervascular mass with enlarged feeding [[arteries]] | |||
*Intense [[tumor]] blush due to high [[vascular]] content | |||
*Early [[venous drainage]] | |||
*Splaying of the [[carotid]] vessels | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
[[Category:Medicine]] | [[Category:Medicine]] | ||
[[Category:Oncology]] | [[Category:Oncology]] | ||
[[Category: | [[Category:Up-To-Date]] | ||
[[Category:Surgery]] | [[Category:Surgery]] | ||
[[Category:Radiology]] | |||
Latest revision as of 20:49, 29 July 2020
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Carotid body tumor Microchapters |
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Carotid body tumor CT scan On the Web |
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American Roentgen Ray Society Images of Carotid body tumor CT scan |
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Risk calculators and risk factors for Carotid body tumor CT scan |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sahar Memar Montazerin, M.D.[2] Maria Fernanda Villarreal, M.D. [3]
Overview
Cervical CT scan may be helpful in the diagnosis of the carotid body tumor. Findings on CT scan suggestive of/diagnostic of carotid body tumor include a well-defined, hypervascular mass which will show homogeneous and intense enhancement after intravenous administration of contrast dye.
CT scan
- The carotid body tumor has the following characteristic feature on the CT scan:[1]
- A well-defined, soft tissue mass within the carotid space
- The mass splays the internal and external carotid arteries (Lyre sign)
- Since the tumor is highly vascular, It will show homogeneous and intense enhancement after intravenous administration of contrast dye.
- large tumors tend to appear in-homogeneous with some areas of hemorrhage as well as necrosis.
- The tumor usually is in the infrahyoid space, however, it may enlarge to an extent that be present in the suprahyoid space in 8% of the cases as well.
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CT angiography
Findings diagnostic of carotid body tumor include:[2]
- A hypervascular mass with enlarged feeding arteries
- Intense tumor blush due to high vascular content
- Early venous drainage
- Splaying of the carotid vessels
References
- ↑ Lee, Ki Yeol; Oh, Yu-Whan; Noh, Hyung Jun; Lee, Yu Jin; Yong, Hwan-Seok; Kang, Eun-Young; Kim, Kyeong Ah; Lee, Nam Joon (2006). "Extraadrenal Paragangliomas of the Body: Imaging Features". American Journal of Roentgenology. 187 (2): 492–504. doi:10.2214/AJR.05.0370. ISSN 0361-803X.
- ↑ Wieneke, Jacqueline A.; Smith, Alice (2009). "Paraganglioma: Carotid Body Tumor". Head and Neck Pathology. 3 (4): 303–306. doi:10.1007/s12105-009-0130-5. ISSN 1936-055X.