Liposarcoma MRI: Difference between revisions
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|[[File: Myxoid Liposarcoma of the Thigh.jpg |thumb|320px|Myxoid Liposarcoma Large soft tissue mass is noted at the medial posterior portion of the lower part of the left thigh. It has an isointense signal to the adjacent muscles on T1 sequences with an area of high signal intensity which is suppressed by STIR sequences indicating fatty component. It appears intermediate in signal intensity on T2 sequences with intense enhancement post-gadolinium injection. <br> Image courtesy of Radiopaedia.org]] | |||
|[[File: Myxoid Liposarcoma of the Thigh 2.jpg |thumb|320px|Myxoid Liposarcoma Large soft tissue mass is noted at the medial posterior portion of the lower part of the left thigh. It has an isointense signal to the adjacent muscles on T1 sequences with an area of high signal intensity which is suppressed by STIR sequences indicating fatty component. It appears intermediate in signal intensity on T2 sequences with intense enhancement post-gadolinium injection. <br> Image courtesy of Radiopaedia.org]] | |||
|[[File: Myxoid Liposarcoma of the Thigh 3.jpg |thumb|320px|Myxoid Liposarcoma Large soft tissue mass is noted at the medial posterior portion of the lower part of the left thigh. It has an isointense signal to the adjacent muscles on T1 sequences with an area of high signal intensity which is suppressed by STIR sequences indicating fatty component. It appears intermediate in signal intensity on T2 sequences with intense enhancement post-gadolinium injection. <br> Image courtesy of Radiopaedia.org]] | |||
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=References= | =References= | ||
Revision as of 15:43, 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 and may appear multilobulated. [3]
 Image courtesy of Radiopaedia.org |
 Image courtesy of Radiopaedia.org |
 Image courtesy of Radiopaedia.org |
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)