Multiple endocrine neoplasia type 1 MRI: Difference between revisions
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==Overview== | ==Overview== | ||
==MRI== | ==MRI== | ||
===Gastrointestinal Neuroendocrine Tumors=== | ===Gastrointestinal Neuroendocrine Tumors<ref name=Radiopaedia012015>{{cite web | title = Radiopedia2015 Gastrointestinal neuroendocrine tumours [Dr Dalia Ibrahim and Dr Jan Smith]| url = http://radiopaedia.org/articles/gastrointestinal-neuroendocrine-tumours-3 }}</ref>=== | ||
* Used for suspected hepatic, pancreatic or retroperitoneal NETS, often with gadolinium contrast. | * Used for suspected hepatic, pancreatic or retroperitoneal NETS, often with gadolinium contrast. | ||
* MRI enterography also possible. | * MRI enterography also possible. | ||
===Insulinoma=== | ===Insulinoma<ref name=Radiopaedia032015>{{cite web | title = Radiopedia2015 Insulinoma [Dr Yuranga Weerakkody and Dr Frank Gaillard]| url = http://radiopaedia.org/articles/insulinoma }}</ref>=== | ||
* Dynamic MRI with fast gradient echo sequences following bolus injection of contrast medium may aid the detection of these tumours<ref name="pmid11675319">{{cite journal| author=Owen NJ, Sohaib SA, Peppercorn PD, Monson JP, Grossman AB, Besser GM et al.| title=MRI of pancreatic neuroendocrine tumours. | journal=Br J Radiol | year= 2001 | volume= 74 | issue= 886 | pages= 968-73 | pmid=11675319 | doi=10.1259/bjr.74.886.740968 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11675319 }} </ref> | * Dynamic MRI with fast gradient echo sequences following bolus injection of contrast medium may aid the detection of these tumours<ref name="pmid11675319">{{cite journal| author=Owen NJ, Sohaib SA, Peppercorn PD, Monson JP, Grossman AB, Besser GM et al.| title=MRI of pancreatic neuroendocrine tumours. | journal=Br J Radiol | year= 2001 | volume= 74 | issue= 886 | pages= 968-73 | pmid=11675319 | doi=10.1259/bjr.74.886.740968 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11675319 }} </ref> | ||
* T1 C+ (Gd): typically shows enhancement, although contrast enhancement may not improve tumour visualisation compared with non-contrast images | * T1 C+ (Gd): typically shows enhancement, although contrast enhancement may not improve tumour visualisation compared with non-contrast images | ||
===Somatostatinoma=== | ===Somatostatinoma<ref name=Radiopaedia072015>{{cite web | title = Radiopedia2015 Somatostatinoma [Dr Yuranga Weerakkody]| url = http://radiopaedia.org/articles/somatostatinoma }}</ref>=== | ||
* Smaller lesions may be difficult to diagnose. Described signal characteristics of larger lesion include | * Smaller lesions may be difficult to diagnose. Described signal characteristics of larger lesion include | ||
:* T1: low signal 1,8 | :* T1: low signal 1,8 |
Revision as of 20:48, 9 September 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]
Overview
MRI
Gastrointestinal Neuroendocrine Tumors[1]
- Used for suspected hepatic, pancreatic or retroperitoneal NETS, often with gadolinium contrast.
- MRI enterography also possible.
Insulinoma[2]
- Dynamic MRI with fast gradient echo sequences following bolus injection of contrast medium may aid the detection of these tumours[3]
- T1 C+ (Gd): typically shows enhancement, although contrast enhancement may not improve tumour visualisation compared with non-contrast images
Somatostatinoma[4]
- Smaller lesions may be difficult to diagnose. Described signal characteristics of larger lesion include
- T1: low signal 1,8
- T2: high signal 1,8
- T1 (C+) Gd: most show early diffuse heterogenous enhancement
Reference
- ↑ "Radiopedia2015 Gastrointestinal neuroendocrine tumours [Dr Dalia Ibrahim and Dr Jan Smith]".
- ↑ "Radiopedia2015 Insulinoma [Dr Yuranga Weerakkody and Dr Frank Gaillard]".
- ↑ Owen NJ, Sohaib SA, Peppercorn PD, Monson JP, Grossman AB, Besser GM; et al. (2001). "MRI of pancreatic neuroendocrine tumours". Br J Radiol. 74 (886): 968–73. doi:10.1259/bjr.74.886.740968. PMID 11675319.
- ↑ "Radiopedia2015 Somatostatinoma [Dr Yuranga Weerakkody]".