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KMID : 1103720170770030192
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Journal of the Korean Society of Radiology
2017 Volume.77 No. 3 p.192 ~ p.196
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Smooth Muscle Tumor of Uncertain Malignant Potential Originating from the Superior Mesenteric Vein: A Case Report
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Kim Kyung-Ho
Kang Kyung-A
Park Ji-Yeon
Kim Seon-Jeong
Lee Jeong-Ju
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Abstract
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Uterine smooth muscle neoplasms that cannot be clearly diagnosed as benign or malignant based on generally applied histopathologic parameters are classified as “smooth muscle tumors of uncertain malignant potential (STUMP)”. Herein, we report on the first case of a STUMP that originated from the superior mesenteric vein (SMV), with emphasis on the radiologic findings. Magnetic resonance imaging showed a well-defined mass encasing the SMV with progressive and homogeneous enhancement in the arterial and portal venous phases. The lesion showed mild hyperintensity on T2-weighted images when compared with skeletal muscle, which was quite different from typical leiomyomas. The lesion also showed hyperintensity on the diffusion-weighted images, and hypointensity on the apparent diffusion coefficient map. These results may reflect the high cellularity of the mass.
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KEYWORD
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Smooth Muscle Tumor, Mesenteric Veins, Magnetic Resonance Imaging, Tomography, X-Ray Computed
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