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Primary Malignant Mixed Müllerian Tumor of the Uterus: Findings on Sonography, CT, and Gadolinium-Enhanced MRI

¹ Division of Abdominal Imaging and Intervention, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis St., Boston, MA 02115.
² Division of Ultrasound, Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.

OBJECTIVE. The purpose of our study was to evaluate the sonographic, contrast-enhanced CT, and gadolinium-enhanced MRI findings of primary malignant mixed müllerian tumors (MMMTs) of the uterus.

CONCLUSION. Uterine MMMT most commonly presents as an intracavitary mass with coexistent dilatation of the endometrial canal. Tumors tend to appear hyperechoic on sonography, heterogeneously hypodense and ill defined on contrast-enhanced CT, and heterogeneously hyperintense on T2-weighted MR images with signal abnormalities indicating subacute hemorrhage on T1-weighted MR images. Myometrial invasion is common and has a predilection for the uterine fundus.

Keywords: CT • mixed müllerian tumor • MRI • sonography • uterus

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