Chronic pancreatitis MRI: Difference between revisions

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{{Chronic-pancreatitis}}
{{Chronic pancreatitis}}
{{CMG}}
{{CMG}}; {{AE}}{{IQ}}


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==Overview==
MRI findings for chronic pancreatitis may be classified as early and late findings. Early findings may include low-signal-intensity [[pancreas]] on T1-weighted fat-suppressed images, decreased and delayed enhancement after IV contrast administration and dilated side branches. Late findings may include [[parenchymal]] [[atrophy]] or enlargement, [[pseudocyst]] formation, dilatation and beading of the pancreatic duct with intraductal [[Calcification|calcifications]] giving an appearance of 'chain of lakes'.
==MRI==
==MRI==
===='''Patient #1'''====  
*MRI may be helpful in the diagnosis of a rare form, groove pancreatitis.<ref name="pmid17873465">{{cite journal |vauthors=Balakrishnan V, Chatni S, Radhakrishnan L, Narayanan VA, Nair P |title=Groove pancreatitis: a case report and review of literature |journal=JOP |volume=8 |issue=5 |pages=592–7 |year=2007 |pmid=17873465 |doi= |url=}}</ref><ref name="pmid17579155">{{cite journal |vauthors=Blasbalg R, Baroni RH, Costa DN, Machado MC |title=MRI features of groove pancreatitis |journal=AJR Am J Roentgenol |volume=189 |issue=1 |pages=73–80 |year=2007 |pmid=17579155 |doi=10.2214/AJR.06.1244 |url=}}</ref>


MR demonstrates superior mesenteric vein thrombosis secondary to chronic pancreatitis:
=== 1. Morphological findings: ===
Features of chronic pancreatitis can be divided into early and late findings:<ref name="pmid15547204">{{cite journal |vauthors=Miller FH, Keppke AL, Wadhwa A, Ly JN, Dalal K, Kamler VA |title=MRI of pancreatitis and its complications: part 2, chronic pancreatitis |journal=AJR Am J Roentgenol |volume=183 |issue=6 |pages=1645–52 |year=2004 |pmid=15547204 |doi=10.2214/ajr.183.6.01831645 |url=}}</ref><ref name="pmid22194487">{{cite journal |vauthors=Sanyal R, Stevens T, Novak E, Veniero JC |title=Secretin-enhanced MRCP: review of technique and application with proposal for quantification of exocrine function |journal=AJR Am J Roentgenol |volume=198 |issue=1 |pages=124–32 |year=2012 |pmid=22194487 |doi=10.2214/AJR.10.5713 |url=}}</ref><ref name="pmid24222963">{{cite journal |vauthors=Bian Y, Wang L, Chen C, Lu JP, Fan JB, Chen SY, Zhao BH |title=Quantification of pancreatic exocrine function of chronic pancreatitis with secretin-enhanced MRCP |journal=World J. Gastroenterol. |volume=19 |issue=41 |pages=7177–82 |year=2013 |pmid=24222963 |pmc=3819555 |doi=10.3748/wjg.v19.i41.7177 |url=}}</ref><ref name="pmid24259954">{{cite journal |vauthors=Hansen TM, Nilsson M, Gram M, Frøkjær JB |title=Morphological and functional evaluation of chronic pancreatitis with magnetic resonance imaging |journal=World J. Gastroenterol. |volume=19 |issue=42 |pages=7241–6 |year=2013 |pmid=24259954 |pmc=3831205 |doi=10.3748/wjg.v19.i42.7241 |url=}}</ref>


[http://www.radswiki.net Images courtesy of RadsWiki]
(a) Early findings:
* Low-signal-intensity pancreas on T1-weighted fat-suppressed images
* Decreased and delayed enhancement after IV contrast administration
* Dilated side branches ​
(b) Late findings:
* Parenchymal atrophy or enlargement
* Pseudocyst formation
* Dilatation and beading of the pancreatic duct with intraductal calcifications can give an appearance of  'chain of lakes'.


<gallery perRow="3">
[[Image: Snipped image.PNG|600 px|center|right|thumb|Source:Radiopedia.com Case courtesy of Dr Chris O'Donnell <ref> a href="https://radiopaedia.org/">Radiopaedia.org. From the case
Image:Superior-mesenteric-vein-thrombosis-001.jpg
href="https://radiopaedia.org/cases/17014">rID: 17014</ref>]]
Image:Superior-mesenteric-vein-thrombosis-002.jpg
Image:Superior-mesenteric-vein-thrombosis-005.jpg
Image:Superior-mesenteric-vein-thrombosis-006.jpg
Image:Superior-mesenteric-vein-thrombosis-007.jpg
Image:Superior-mesenteric-vein-thrombosis-008.jpg
</gallery>


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


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Latest revision as of 15:21, 31 January 2018

Chronic pancreatitis Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Iqra Qamar M.D.[2]

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Overview

MRI findings for chronic pancreatitis may be classified as early and late findings. Early findings may include low-signal-intensity pancreas on T1-weighted fat-suppressed images, decreased and delayed enhancement after IV contrast administration and dilated side branches. Late findings may include parenchymal atrophy or enlargement, pseudocyst formation, dilatation and beading of the pancreatic duct with intraductal calcifications giving an appearance of 'chain of lakes'.

MRI

  • MRI may be helpful in the diagnosis of a rare form, groove pancreatitis.[1][2]

1. Morphological findings:

Features of chronic pancreatitis can be divided into early and late findings:[3][4][5][6]

(a) Early findings:

  • Low-signal-intensity pancreas on T1-weighted fat-suppressed images
  • Decreased and delayed enhancement after IV contrast administration
  • Dilated side branches ​

(b) Late findings:

  • Parenchymal atrophy or enlargement
  • Pseudocyst formation
  • Dilatation and beading of the pancreatic duct with intraductal calcifications can give an appearance of 'chain of lakes'.
Source:Radiopedia.com Case courtesy of Dr Chris O'Donnell [7]

References

  1. ↑ Balakrishnan V, Chatni S, Radhakrishnan L, Narayanan VA, Nair P (2007). "Groove pancreatitis: a case report and review of literature". JOP. 8 (5): 592–7. PMID 17873465.
  2. ↑ Blasbalg R, Baroni RH, Costa DN, Machado MC (2007). "MRI features of groove pancreatitis". AJR Am J Roentgenol. 189 (1): 73–80. doi:10.2214/AJR.06.1244. PMID 17579155.
  3. ↑ Miller FH, Keppke AL, Wadhwa A, Ly JN, Dalal K, Kamler VA (2004). "MRI of pancreatitis and its complications: part 2, chronic pancreatitis". AJR Am J Roentgenol. 183 (6): 1645–52. doi:10.2214/ajr.183.6.01831645. PMID 15547204.
  4. ↑ Sanyal R, Stevens T, Novak E, Veniero JC (2012). "Secretin-enhanced MRCP: review of technique and application with proposal for quantification of exocrine function". AJR Am J Roentgenol. 198 (1): 124–32. doi:10.2214/AJR.10.5713. PMID 22194487.
  5. ↑ Bian Y, Wang L, Chen C, Lu JP, Fan JB, Chen SY, Zhao BH (2013). "Quantification of pancreatic exocrine function of chronic pancreatitis with secretin-enhanced MRCP". World J. Gastroenterol. 19 (41): 7177–82. doi:10.3748/wjg.v19.i41.7177. PMC 3819555. PMID 24222963.
  6. ↑ Hansen TM, Nilsson M, Gram M, Frøkjær JB (2013). "Morphological and functional evaluation of chronic pancreatitis with magnetic resonance imaging". World J. Gastroenterol. 19 (42): 7241–6. doi:10.3748/wjg.v19.i42.7241. PMC 3831205. PMID 24259954.
  7. ↑ a href="https://radiopaedia.org/">Radiopaedia.org. From the case href="https://radiopaedia.org/cases/17014">rID: 17014


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