Liposarcoma MRI: Difference between revisions
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==MRI== | ==MRI== | ||
*MRI findings for a well-differentiated liposarcoma include a mass with at least 75% of adipose content with thin irregular septa. <ref name="PetersonKransdorf2003">{{cite journal|last1=Peterson|first1=Jeffrey J.|last2=Kransdorf|first2=Mark J.|last3=Bancroft|first3=Laura W.|last4=O'Connor|first4=Mary I.|title=Malignant fatty tumors: classification, clinical course, imaging appearance and treatment|journal=Skeletal Radiology|volume=32|issue=9|year=2003|pages=493–503|issn=0364-2348|doi=10.1007/s00256-003-0647-8}}</ref> | *MRI findings for a well-differentiated liposarcoma include a mass with at least 75% of adipose content with thin irregular septa. <ref name="PetersonKransdorf2003">{{cite journal|last1=Peterson|first1=Jeffrey J.|last2=Kransdorf|first2=Mark J.|last3=Bancroft|first3=Laura W.|last4=O'Connor|first4=Mary I.|title=Malignant fatty tumors: classification, clinical course, imaging appearance and treatment|journal=Skeletal Radiology|volume=32|issue=9|year=2003|pages=493–503|issn=0364-2348|doi=10.1007/s00256-003-0647-8}}</ref> | ||
*Other subtypes show less adipose content. | *Other subtypes show less adipose content. | ||
*Thick septa inside the mass is associated with a more malignant prognosis. | *Thick septa inside the mass is associated with a more malignant prognosis. | ||
*For the dedifferentiated subtype, hemorrhage and necrosis may be observed inside the mass. | *For the dedifferentiated subtype, hemorrhage and necrosis may be observed inside the mass. | ||
*The myxoid subtype may be associated with cystic imaging findings in | *The typical appearance of a myxoid liposarcoma has a low signal intensity on T1, in contrast with the high intensity signal in well-differentiated liposarcoma due to the high adipose content. <ref>{{Cite journal | ||
| author = [[M. S. Sung]], [[H. S. Kang]], [[J. S. Suh]], [[J. H. Lee]], [[J. M. Park]], [[J. Y. Kim]] & [[H. G. Lee]] | |||
| title = Myxoid liposarcoma: appearance at MR imaging with histologic correlation | |||
| journal = [[Radiographics : a review publication of the Radiological Society of North America, Inc]] | |||
| volume = 20 | |||
| issue = 4 | |||
| pages = 1007–1019 | |||
| year = 2000 | |||
| month = July-August | |||
| doi = 10.1148/radiographics.20.4.g00jl021007 | |||
| pmid = 10903690 | |||
}}</ref> | |||
*The myxoid subtype may be associated with cystic imaging findings in approximately 20% of cases. <ref>{{Cite journal | |||
| author = [[M. S. Sung]], [[H. S. Kang]], [[J. S. Suh]], [[J. H. Lee]], [[J. M. Park]], [[J. Y. Kim]] & [[H. G. Lee]] | | author = [[M. S. Sung]], [[H. S. Kang]], [[J. S. Suh]], [[J. H. Lee]], [[J. M. Park]], [[J. Y. Kim]] & [[H. G. Lee]] | ||
| title = Myxoid liposarcoma: appearance at MR imaging with histologic correlation | | title = Myxoid liposarcoma: appearance at MR imaging with histologic correlation | ||
| Line 24: | Line 35: | ||
| pmid = 10903690 | | pmid = 10903690 | ||
}}</ref> | }}</ref> | ||
=References= | =References= | ||
Revision as of 14:56, 22 September 2014
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Liposarcoma Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Liposarcoma MRI On the Web |
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American Roentgen Ray Society Images of Liposarcoma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Alejandro Lemor, M.D. [2]
Overview
MRI is the imaging test of choice for the diagnosis of liposarcoma. MRI findings may differentiate between the different subtypes of liposarcoma and help to assess distant metastasis.
MRI
- MRI findings for a well-differentiated liposarcoma include a mass with at least 75% of adipose content with thin irregular septa. [1]
- Other subtypes show less adipose content.
- Thick septa inside the mass is associated with a more malignant prognosis.
- For the dedifferentiated subtype, hemorrhage and necrosis may be observed inside the mass.
- The typical appearance of a myxoid liposarcoma has a low signal intensity on T1, in contrast with the high intensity signal in well-differentiated liposarcoma due to the high adipose content. [2]
- The myxoid subtype may be associated with cystic imaging findings in approximately 20% of cases. [3]
References
- ↑ Peterson, Jeffrey J.; Kransdorf, Mark J.; Bancroft, Laura W.; O'Connor, Mary I. (2003). "Malignant fatty tumors: classification, clinical course, imaging appearance and treatment". Skeletal Radiology. 32 (9): 493–503. doi:10.1007/s00256-003-0647-8. ISSN 0364-2348.
- ↑ M. S. Sung, H. S. Kang, J. S. Suh, J. H. Lee, J. M. Park, J. Y. Kim & H. G. Lee (2000). "Myxoid liposarcoma: appearance at MR imaging with histologic correlation". Radiographics : a review publication of the Radiological Society of North America, Inc. 20 (4): 1007–1019. doi:10.1148/radiographics.20.4.g00jl021007. PMID 10903690. Unknown parameter
|month=ignored (help) - ↑ M. S. Sung, H. S. Kang, J. S. Suh, J. H. Lee, J. M. Park, J. Y. Kim & H. G. Lee (2000). "Myxoid liposarcoma: appearance at MR imaging with histologic correlation". Radiographics : a review publication of the Radiological Society of North America, Inc. 20 (4): 1007–1019. doi:10.1148/radiographics.20.4.g00jl021007. PMID 10903690. Unknown parameter
|month=ignored (help)