Leiomyosarcoma MRI

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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 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

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:

• Intermediate-to-high signal intensity, with central hyperintensity indicative of extensive necrosis.
• Hemorrhage is common and calcification may be present.