Leiomyosarcoma MRI

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

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.[1]

MRI

  • On T1-weighted images of MRI, Leiomyosarcomas commonly manifest as large infiltrating mass of heterogeneous hypo intensity with irregular and ill-defined margins.
  • On T2-weighted images,they usually show intermediate-to-high signal intensity, with central hyper intensity indicative of extensive necrosis.Hemorrhage is common and foci of calcification may be present.[2]

References

  1. Messiou C, Moskovic E, Vanel D, Morosi C, Benchimol R, Strauss D et al. (2017) Primary retroperitoneal soft tissue sarcoma: Imaging appearances, pitfalls and diagnostic algorithm. Eur J Surg Oncol 43 (7):1191-1198. DOI:10.1016/j.ejso.2016.10.032 PMID: 28057392
  2. Bretan PN, Williams RD, Hricak H (1986) Preoperative assessment of retroperitoneal pathology by magnetic resonance imaging. Primary leiomyosarcoma of inferior vena cava. Urology 28 (3):251-5. PMID: 3750612


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