Hepatocellular adenoma CT: Difference between revisions
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==Overview== | ==Overview== | ||
The [[Computed tomography|CT scan]] appearances of | The [[Computed tomography|CT scan]] appearances of hepatocellular adenoma are usually variable and characteristic [[Lesion|lesions]] are best seen with multiphase helical [[Computed tomography|CT scanning]]. The [[Computed tomography|CT scan]] findings include non-lobulated and well-marginated mass that can be encapsulated and is rarely [[Calcification|calcified]]. A [[heterogeneous]] hypo-attenuating area within the [[tumor]] may be seen in cases of [[necrosis]] or old [[hemorrhage]]. Large hepatocellular adenomas may be more [[heterogeneous]] than smaller [[Lesion|lesions]] and their [[Computed tomography|CT scan]] appearance is less specific. | ||
==CT== | ==CT scan== | ||
* The [[Computed tomography|CT scan]] appearances of | * The [[Computed tomography|CT scan]] appearances of hepatocellular adenoma are usually variable, and classical characteristic [[Lesion|lesions]] of [[adenoma]] are best seen with multi-phase helical [[Computed tomography|CT scan]].<ref>{{cite journal|doi=10.1594/ecr2013/C-2620}}</ref> | ||
* The [[Computed tomography|CT scan]] findings of | * The [[Computed tomography|CT scan]] findings of hepatocellular adenoma include the following:<ref>{{Cite journal | ||
| author = [[Bipin Valchandji Daga]], [[Vaibhav R. Shah]] & [[Rahul B. More]] | | author = [[Bipin Valchandji Daga]], [[Vaibhav R. Shah]] & [[Rahul B. More]] | ||
| title = CT scan diagnosis of hepatic adenoma in a case of von Gierke disease | | title = CT scan diagnosis of hepatic adenoma in a case of von Gierke disease | ||
| Line 54: | Line 54: | ||
}}</ref><ref name="DhingraFiel2014">{{cite journal|last1=Dhingra|first1=Sadhna|last2=Fiel|first2=M. Isabel|title=Update on the New Classification of Hepatic Adenomas: Clinical, Molecular, and Pathologic Characteristics|journal=Archives of Pathology & Laboratory Medicine|volume=138|issue=8|year=2014|pages=1090–1097|issn=0003-9985|doi=10.5858/arpa.2013-0183-RA}}</ref> | }}</ref><ref name="DhingraFiel2014">{{cite journal|last1=Dhingra|first1=Sadhna|last2=Fiel|first2=M. Isabel|title=Update on the New Classification of Hepatic Adenomas: Clinical, Molecular, and Pathologic Characteristics|journal=Archives of Pathology & Laboratory Medicine|volume=138|issue=8|year=2014|pages=1090–1097|issn=0003-9985|doi=10.5858/arpa.2013-0183-RA}}</ref> | ||
** Non lobulated, well marginated [[mass]] that can be encapsulated and is rarely [[Calcification|calcified]]. | ** Non lobulated, well marginated [[mass]] that can be encapsulated and is rarely [[Calcification|calcified]]. | ||
** [[Homogeneous]] enhancement in the [[Artery|arterial]] phase. It is usually [[Attenuation|isoattenuating]] but sometimes mildly [[Attenuation|hypo-attenuating]] relative to normal [[liver]] on unenhanced [[Portal vein|portal venous]] phase and delayed phase images. | **[[Homogeneous]] enhancement in the [[Artery|arterial]] phase. It is usually [[Attenuation|isoattenuating]] but sometimes mildly [[Attenuation|hypo-attenuating]] relative to normal [[liver]] on unenhanced [[Portal vein|portal venous]] phase and delayed phase images. | ||
** The presence of [[Tumoral|intratumoral]] [[fat]] can reveal a [[Attenuation|hypoattenuating]] [[mass]], if it is surrounded by a [[fatty liver]] it appears [[Attenuation|hyperattenuating]] on all [[contrast]] phases and unenhanced images. | ** The presence of [[Tumoral|intratumoral]] [[fat]] can reveal a [[Attenuation|hypoattenuating]] [[mass]], if it is surrounded by a [[fatty liver]] it appears [[Attenuation|hyperattenuating]] on all [[contrast]] phases and unenhanced images. | ||
** A [[heterogeneous]], [[Attenuation|hypo-attenuating]] area within the [[tumor]] is seen in cases of [[necrosis]] or old [[hemorrhage]]. | ** A [[heterogeneous]], [[Attenuation|hypo-attenuating]] area within the [[tumor]] is seen in cases of [[necrosis]] or old [[hemorrhage]]. | ||
** Large | ** Large hepatocellular adenomas may be more [[heterogeneous]] than smaller [[Lesion|lesions]] and their [[Computed tomography|CT scan]] appearance is less specific. | ||
==References== | ==References== | ||
Revision as of 22:28, 20 August 2019
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Overview
The CT scan appearances of hepatocellular adenoma are usually variable and characteristic lesions are best seen with multiphase helical CT scanning. The CT scan findings include non-lobulated and well-marginated mass that can be encapsulated and is rarely calcified. A heterogeneous hypo-attenuating area within the tumor may be seen in cases of necrosis or old hemorrhage. Large hepatocellular adenomas may be more heterogeneous than smaller lesions and their CT scan appearance is less specific.
CT scan
- The CT scan appearances of hepatocellular adenoma are usually variable, and classical characteristic lesions of adenoma are best seen with multi-phase helical CT scan.[1]
- The CT scan findings of hepatocellular adenoma include the following:[2][3][4][5][6]
- Non lobulated, well marginated mass that can be encapsulated and is rarely calcified.
- Homogeneous enhancement in the arterial phase. It is usually isoattenuating but sometimes mildly hypo-attenuating relative to normal liver on unenhanced portal venous phase and delayed phase images.
- The presence of intratumoral fat can reveal a hypoattenuating mass, if it is surrounded by a fatty liver it appears hyperattenuating on all contrast phases and unenhanced images.
- A heterogeneous, hypo-attenuating area within the tumor is seen in cases of necrosis or old hemorrhage.
- Large hepatocellular adenomas may be more heterogeneous than smaller lesions and their CT scan appearance is less specific.
References
- ↑ . doi:10.1594/ecr2013/C-2620. Missing or empty
|title=(help) - ↑ Bipin Valchandji Daga, Vaibhav R. Shah & Rahul B. More (2012). "CT scan diagnosis of hepatic adenoma in a case of von Gierke disease". The Indian journal of radiology & imaging. 22 (1): 54–57. doi:10.4103/0971-3026.95405. PMID 22623817. Unknown parameter
|month=ignored (help) - ↑ Ludger Barthelmes & Iain S. Tait (2005). "Liver cell adenoma and liver cell adenomatosis". HPB : the official journal of the International Hepato Pancreato Biliary Association. 7 (3): 186–196. doi:10.1080/13651820510028954. PMID 18333188.
- ↑ T. J. Welch, P. F. 2nd Sheedy, C. M. Johnson, D. H. Stephens, J. W. Charboneau, M. L. Brown, G. R. May, M. A. Adson & D. B. McGill (1985). "Focal nodular hyperplasia and hepatic adenoma: comparison of angiography, CT, US, and scintigraphy". Radiology. 156 (3): 593–595. doi:10.1148/radiology.156.3.3895291. PMID 3895291. Unknown parameter
|month=ignored (help) - ↑ H. Dharmana, S. Saravana-Bawan, S. Girgis & G. Low (2017). "Hepatocellular adenoma: imaging review of the various molecular subtypes". Clinical radiology. 72 (4): 276–285. doi:10.1016/j.crad.2016.12.020. PMID 28126185. Unknown parameter
|month=ignored (help) - ↑ Dhingra, Sadhna; Fiel, M. Isabel (2014). "Update on the New Classification of Hepatic Adenomas: Clinical, Molecular, and Pathologic Characteristics". Archives of Pathology & Laboratory Medicine. 138 (8): 1090–1097. doi:10.5858/arpa.2013-0183-RA. ISSN 0003-9985.