J Korean Soc Radiol.  2011 Jul;65(1):89-93. 10.3348/jksr.2011.65.1.89.

Identification of Fat in Myxoid Matrix-Rich Mesenteric Lipoblastoma Using In-Phase and Opposed-Phase MRI: A Case Report

• Wen Y
• Ha JY
• Goo HW

• KMID: 1443499
• DOI: http://doi.org/10.3348/jksr.2011.65.1.89

Abstract

We present a rare case of a myxoid matrix-rich mesenteric lipoblastoma. In this case, fat-saturated T1-weighted magnetic resonance (MR) imaging failed to disclose the fatty component of the tumor, while in-phase and opposed-phase MR imaging could accurately identify small fat scattered in this myxoid matrix-rich tumor.

MeSH Terms

Child
Humans
Lipoblastoma
Lipoma
Magnetic Resonance Imaging
Magnetic Resonance Spectroscopy
Mesentery

Figure

• 

  Fig. 1 Imaging and histologic findings of myxoid matrix-rich mesenteric lipoblastoma. A. Transverse abdominal US shows a large, lobulated, well-defined, hyperechoic solid mass without posterior acoustic enhancement. B. Precontrast axial CT image reveals multiple lobules of the mass with central isodensity (36 HU) and peripheral hypodensity (10 HU) and without a definite evidence of fat. C. Contrast-enhanced axial CT image demonstrates a minimal degree of enhancement (4-7 HU) in the hypodense mass. D. Axial T2-weighted MR image shows diffuse hyperintensity with hypointense septa of the mass. E. Coronal T1-weighted MR image shows diffuse isointensity with hyperintense peripheral rims of the mass. F. Coronal, fat suppressed T1-weighted MR image shows no evidence of fat suppression in the majority of the mass. G. Coronal, T1-weighted gradient-echo in-phase MR image shows a slightly hypointense mass with hyperintense peripheral rims. H. Coronal opposed-phase MR image demonstrates a considerable drop in signal intensity in the entire mass. I. Gross specimen shows that the resected mass appears bosselated, yellowish gray, and myxoid. J. Photomicrograph shows scattered immature lipoblasts (long arrow) characterized by nuclear indentation by lipid-containing cytoplasmic vacuoles, as well as a few mature adipocytes (short arrow) characterized by the crescent-shaped peripheral nucleus and a large lipid droplet in abundant myxoid matrix background (Hematoxylin & Eosin stain, × 40). Note.-MR = magnetic resonance

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