Renal cell carcinoma CT: Difference between revisions

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{{CMG}}
__NOTOC__
{{Renal cell carcinoma}}
{{Renal cell carcinoma}}
{{CMG}} {{AE}} {{F.K}} {{Rim}}


==Overview==
==Overview==
Renal CT scan may be helpful in the diagnosis of renal cell carcinoma. CT may be used to detect [[neoplastic]] masses that may define renal cell carcinoma or [[metastasis]] of primary cancer.
==Computed Tomography==
Renal CT scan may be helpful in the diagnosis of renal cell carcinoma. CT may be used to detect [[neoplastic]] masses that may define renal cell carcinoma or [[metastasis]] of the primary cancer. CT scan and use of intravenous (IV) [[contrast]] is generally used for work-up and follow-up of patients with renal cell carcinoma.<ref name="pmid16339096‎">{{cite journal| author=Cohen HT, McGovern FJ| title=Renal-cell carcinoma. | journal=N Engl J Med | year= 2005 | volume= 353 | issue= 23 | pages= 2477-90 | pmid=16339096‎ | doi=10.1056/NEJMra043172 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16339096  }} </ref> <ref name="pmid20479778">{{cite journal |vauthors=Leveridge MJ, Bostrom PJ, Koulouris G, Finelli A, Lawrentschuk N |title=Imaging renal cell carcinoma with ultrasonography, CT and MRI |journal=Nat Rev Urol |volume=7 |issue=6 |pages=311–25 |date=June 2010 |pmid=20479778 |doi=10.1038/nrurol.2010.63 |url=}}</ref><br> The following guidelines of the American Urological Association in 2013 state the following regarding the use of CT in renal cell carcinoma:
<br>
{|
! colspan="3" style="background:#4479BA; color: #FFFFFF;" align="center" + |'''''Use of CT in Renal Cell Carcinoma<ref name="pmid23665399">{{cite journal| author=Donat SM, Diaz M, Bishoff JT, Coleman JA, Dahm P, Derweesh IH et al.| title=Follow-up for Clinically Localized Renal Neoplasms: AUA Guideline. | journal=J Urol | year= 2013 | volume= 190 | issue= 2 | pages= 407-16 | pmid=23665399 | doi=10.1016/j.juro.2013.04.121 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23665399  }} </ref>'''''
|-
! style="background:#7d7d7d; color: #FFFFFF;" align="center" + |'''Patient Profile'''
! style="background:#7d7d7d; color: #FFFFFF;" align="center" + |'''Use of CT'''
! style="background:#7d7d7d; color: #FFFFFF;" align="center" + |'''Evidence Strength''
|-
| style="background:#DCDCDC;" + |'''Low Risk Patient (pT1, N0, Nx)'''
| style="background:#F5F5F5;" + |Baseline abdominal CT (or MRI) for nephron sparing surgery and CT (or US or MRI) for radical nephrectomy within 3-12 months following renal surgery <br><br>Additional CT (or US or MRI) may be performed in patients following radical nephrectomy if initial post-op baseline image is negative
| style="background:#F5F5F5;" align="center" + |Expert opinion<br>C
|-
| style="background:#DCDCDC;" + |'''Moderate to High Risk Patients (pT2-4N0 Nx or any stage N+)'''
| style="background:#F5F5F5;" + |Baseline chest and abdominal CT (or MRI) within 3-6 months following surgery with continued imaging (US, CXR, CT, or MRI) every 6 months for at least 3 years and annually thereafter to 5 years. Site specific imaging is warranted by clinical symptoms suggestive of recurrence or metastatic spread. Imaging (US, CXR, CT, or MRI) beyond 5 years may be performed at the discretion of the clinician
| style="background:#F5F5F5;" align="center" + |C
|-
| style="background:#DCDCDC;" + |'''Active surveillance'''
| style="background:#F5F5F5;" + |Cross-sectional abdominal scanning (CT or MRI) within 6 months of active surveillance initiation to establish a growth rate. Further imaging is recommended at least annually thereafter
| style="background:#F5F5F5;" align="center" + |C
|-
| style="background:#DCDCDC;" + |'''Ablation '''
| style="background:#F5F5F5;" + |Patients undergo cross-sectional CT or MRI with and without IV contrast unless contraindicated at 3 and 6 months following ablative therapy to assess treatment success. Annual abdominal CT or MRI should follow for 5 years. Individual CT (or MRI) beyond 5 years is based on individual patient risk factors
| style="background:#F5F5F5;" align="center" + | C
|}


==CT ==
<sup><center>Adapted from Donat SM et al. Follow-up for clinically localized renal neoplasms: AUA guideline. ''J Urol''. 2013; 190(2):407-16. </center>
TO detect
* Cerebral metastases
* Cutaneous metastasis
* Lung metastases
===Radiology===


The characteristic appearance of renal cell carcinoma (RCC) is a solid renal lesion which disturbs the renal contour. It will frequently have an irregular or lobulated margin. 85% of solid renal masses will be RCC. 10% of RCC will contain calcifications, and some contain macroscopic fat (likely due to invasion and encasement of the perirenal fat). Following intravenous contrast administration ([[computed tomography]] or [[magnetic resonance imaging]]), enhancement will be noted, and will increase the conspicuity of the tumor relative to normal renal parenchyma.
[[File:Hypovascular-renal-cell-carcinoma.jpg|300px|thumb|left|CT scan showing renal cell carcinoma [https://radiopaedia.org/cases/hypovascular-renal-cell-carcinoma source:Case courtesy of Dr Roberto Schubert, Radiopaedia.org, rID: 16088]]]
<br style="clear:left" />


'''Patient #1'''
[[File:Transitional-cell-carcinoma-of-the-renal-pelvis.jpg|300px|thumb|left|CT scan showing renal cell carcinoma [https://radiopaedia.org/cases/https://radiopaedia.org/cases/transitional-cell-carcinoma-of-the-renal-pelvis source:Case courtesy of Dr Roberto Schubert, Radiopaedia.org, rID: 14163]]]
 
<br style="clear:left" />
[http://www.radswiki.net Images courtesy of RadsWiki]
 
[[Image:Renal cell carcinoma with intravascular extension 001.jpg|thumb|left|350px|T2: Renal cell carcinoma with intravascular extension]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma with intravascular extension 002.jpg|thumb|left|350px|T1 post contrast: Renal cell carcinoma with intravascular extension]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma with intravascular extension 003.jpg|thumb|left|350px|T1 post contrast: Renal cell carcinoma with intravascular extension]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma with intravascular extension 004.jpg|thumb|left|350px|T1 post contrast: Renal cell carcinoma with intravascular extension]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma with intravascular extension 005.jpg|thumb|left|350px|T1 post contrast: Renal cell carcinoma with intravascular extension]]
<br clear="left"/>
 
'''Patient #2'''
 
[http://www.radswiki.net Images courtesy of RadsWiki]
 
[[Image:Large renal cell carcinoma 001.jpg|thumb|left|350px|Large renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Large renal cell carcinoma 002.jpg|thumb|left|350px|Large renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Large renal cell carcinoma 003.jpg|thumb|left|350px|Large renal cell carcinoma]]
<br clear="left"/>
 
'''Patient #3'''
 
[http://www.radswiki.net Images courtesy of RadsWiki]
 
[[Image:Renal-cell-carcinoma-003.jpg|thumb|left|350px|Non contrast: Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal-cell-carcinoma-004.jpg|thumb|left|350px|Non contrast: Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal-cell-carcinoma-001.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal-cell-carcinoma-002.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
'''Patient #4'''
 
[http://www.radswiki.net Images courtesy of RadsWiki]
 
[[Image:Renal cell carcinoma 001.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma 002.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma 003.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma 004.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
[[Image:Renal cell carcinoma 005.jpg|thumb|left|350px|Renal cell carcinoma]]
<br clear="left"/>
 
At diagnosis, 30% of renal cell carcinoma has spread to that kidney's renal vein, and 5-10% has continued on into the inferior vena cava<ref>Oto A, Herts BR, Remer EM, Novick AC. Inferior vena cava tumor thrombus in renal cell carcinoma: staging by MR imaging and impact on surgical treatment. AJR Am J Roentgenol. 1998 Dec;171(6):1619-24. PMID 9843299.</ref>.
 
Percutaneous biopsy can be performed by a [[radiologist]] using [[medical ultrasonography|ultrasound]] or [[computed tomography]] to guide sampling of the tumor for the purpose of diagnosis.  However this is not routinely performed because when the typical imaging features of renal cell carcinoma are present, the possibility of an incorrectly negative result together with the risk of a medical complication to the patient make it unfavorable from a risk-benefit perspective.This is not completely accurate, there are new experimental treatments.
 
[[Image:RCC.jpg|thumb|left|350px|A [[computed axial tomography|CT scan]] showing bilateral renal cell carcinomas]]
<br clear="left"/>


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[Category:Kidney diseases]]
[[Category:Types of cancer]]
[[Category:Nephrology]]
[[Category:Mature chapter]]
[[Category:Up-To-Date]]
[[Category:Oncology]]
[[Category:Medicine]]
[[Category:Nephrology]]
[[Category:Surgery]]

Latest revision as of 16:47, 11 December 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Farima Kahe M.D. [2] Rim Halaby, M.D. [3]

Overview

Renal CT scan may be helpful in the diagnosis of renal cell carcinoma. CT may be used to detect neoplastic masses that may define renal cell carcinoma or metastasis of primary cancer.

Computed Tomography

Renal CT scan may be helpful in the diagnosis of renal cell carcinoma. CT may be used to detect neoplastic masses that may define renal cell carcinoma or metastasis of the primary cancer. CT scan and use of intravenous (IV) contrast is generally used for work-up and follow-up of patients with renal cell carcinoma.[1] [2]
The following guidelines of the American Urological Association in 2013 state the following regarding the use of CT in renal cell carcinoma:

Use of CT in Renal Cell Carcinoma[3]
Patient Profile Use of CT 'Evidence Strength
Low Risk Patient (pT1, N0, Nx) Baseline abdominal CT (or MRI) for nephron sparing surgery and CT (or US or MRI) for radical nephrectomy within 3-12 months following renal surgery

Additional CT (or US or MRI) may be performed in patients following radical nephrectomy if initial post-op baseline image is negative
Expert opinion
C
Moderate to High Risk Patients (pT2-4N0 Nx or any stage N+) Baseline chest and abdominal CT (or MRI) within 3-6 months following surgery with continued imaging (US, CXR, CT, or MRI) every 6 months for at least 3 years and annually thereafter to 5 years. Site specific imaging is warranted by clinical symptoms suggestive of recurrence or metastatic spread. Imaging (US, CXR, CT, or MRI) beyond 5 years may be performed at the discretion of the clinician C
Active surveillance Cross-sectional abdominal scanning (CT or MRI) within 6 months of active surveillance initiation to establish a growth rate. Further imaging is recommended at least annually thereafter C
Ablation Patients undergo cross-sectional CT or MRI with and without IV contrast unless contraindicated at 3 and 6 months following ablative therapy to assess treatment success. Annual abdominal CT or MRI should follow for 5 years. Individual CT (or MRI) beyond 5 years is based on individual patient risk factors C
Adapted from Donat SM et al. Follow-up for clinically localized renal neoplasms: AUA guideline. J Urol. 2013; 190(2):407-16.
CT scan showing renal cell carcinoma source:Case courtesy of Dr Roberto Schubert, Radiopaedia.org, rID: 16088


CT scan showing renal cell carcinoma source:Case courtesy of Dr Roberto Schubert, Radiopaedia.org, rID: 14163


References

  1. Cohen HT, McGovern FJ (2005). "Renal-cell carcinoma". N Engl J Med. 353 (23): 2477–90. doi:10.1056/NEJMra043172. PMID 16339096‎ Check |pmid= value (help).
  2. Leveridge MJ, Bostrom PJ, Koulouris G, Finelli A, Lawrentschuk N (June 2010). "Imaging renal cell carcinoma with ultrasonography, CT and MRI". Nat Rev Urol. 7 (6): 311–25. doi:10.1038/nrurol.2010.63. PMID 20479778.
  3. Donat SM, Diaz M, Bishoff JT, Coleman JA, Dahm P, Derweesh IH; et al. (2013). "Follow-up for Clinically Localized Renal Neoplasms: AUA Guideline". J Urol. 190 (2): 407–16. doi:10.1016/j.juro.2013.04.121. PMID 23665399.