Leiomyosarcoma MRI: Difference between revisions

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==Overview==
==Overview==


MRI is an imaging method using signal detection from spinning protons exposed to a magnetic field and offers superior soft tissue contrast to and better evaluation of tumor size, spread, and neurovascular involvement than CT. It also has a valuable role in follow-up for the evaluation for tumor recurrence.
[[MRI]] is usefull diagnostic tool for detecting tumor's spread to [[lymph nodes]] or internal organs in [[pelvic]] or [[abdomen]], it also has a valuable role in follow-up for the evaluation for [[tumor]] recurrence. Findings on [[MRI]] of patients with leiomyosarcoma can be heterogenous [[mass]] with irregular borders.


== MRI ==
== MRI ==
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* large infiltrating myometrial mass of heterogeneous hypointensity with irregular margins.
* large infiltrating myometrial mass of heterogeneous hypointensity with irregular margins.
On T2-weighted images, tumors have the following features:
On T2-weighted images, tumors have the following features:
* Intermediate-to-high signal intensity, with central hyperintensity indicative of extensive necrosis.  
* Intermediate-to-high signal intensity, with central hyperintensity indicative of extensive [[necrosis]].  
* Hemorrhage is common and calcification may be present.<ref name="pmid3750612">Bretan PN, Williams RD, Hricak H (1986) [https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=3750612 Preoperative assessment of retroperitoneal pathology by magnetic resonance imaging. Primary leiomyosarcoma of inferior vena cava.] ''Urology'' 28 (3):251-5. PMID: [https://pubmed.gov/3750612 3750612]</ref>
* [[Hemorrhage]] is common and [[calcification]] may be present.<ref name="pmid3750612">Bretan PN, Williams RD, Hricak H (1986) [https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=3750612 Preoperative assessment of retroperitoneal pathology by magnetic resonance imaging. Primary leiomyosarcoma of inferior vena cava.] ''Urology'' 28 (3):251-5. PMID: [https://pubmed.gov/3750612 3750612]</ref>


==References==
==References==

Revision as of 14:26, 15 March 2019

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

Overview

MRI is usefull diagnostic tool for detecting tumor's spread to lymph nodes or internal organs in pelvic or abdomen, it also has a valuable role in follow-up for the evaluation for tumor recurrence. Findings on MRI of patients with leiomyosarcoma can be heterogenous mass with irregular borders.

MRI

On T1-weighted images of MRI, leiomyosarcomas has the following descriptions:

  • large infiltrating myometrial mass of heterogeneous hypointensity with irregular margins.

On T2-weighted images, tumors have the following features:

References


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