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Gastrointestinal Stromal Tumors of the Duodenum: CT and Barium Study Findings

Hyo-Cheol Kim1, Jeong Min Lee1, Kyu Ri Son1, Se Hyung Kim1, Kyoung Ho Lee1, Kyoung Won Kim2, Minjin Lee3, Joon Koo Han1 and Byung Ihn Choi1

1 Department of Radiology, Seoul National University College of Medicine, Institute of Radiation Medicine, Seoul National University Medical Research Center, and Clinical Research Institute, Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul 110-744, Korea.
2 Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3 Department of Pathology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea.



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  		Fig. 1A. —55-year-old woman with gastrointestinal stromal tumor of duodenum with low malignant potential. Barium study shows well-circumscribed mass (arrows) in first portion of duodenum.

 


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  		Fig. 1B. —55-year-old woman with gastrointestinal stromal tumor of duodenum with low malignant potential. Contrast-enhanced CT scan shows well-defined mass (arrow) with peripheral high-attenuating rim and central areas of low attenuation between gallbladder and pancreas.

 


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  		Fig. 2A. —45-year-old man with malignant gastrointestinal stromal tumor of duodenum. Barium study shows extrinsic compression on third portion of duodenum and focal collection of barium (arrow) in cavity.

 


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  		Fig. 2B. —45-year-old man with malignant gastrointestinal stromal tumor of duodenum. Contrast-enhanced CT scan shows cavitary mass lesion (arrows) with air–fluid level.

 


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  		Fig. 3. —27-year-old woman with malignant gastrointestinal stromal tumor of duodenum. Contrast-enhanced CT scan shows well-enhancing round homogeneous mass (arrow) with intact overlying mucosa (arrowhead).

 


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  		Fig. 4. —68-year-old woman with malignant gastrointestinal stromal tumor of duodenum. Contrast-enhanced CT scan shows lobulated mass lesion encasing right renal vessels (straight arrow) and inferior vena cava (curved arrow). Note stomach is dilated as result of duodenal obstruction.

 


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  		Fig. 5A. —58-year-old man with gastrointestinal stromal tumor of duodenum with multiple liver metastases. Contrast-enhanced CT scan shows well-defined heterogeneous mass lesion (arrow) abutting duodenal wall.

 


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  		Fig. 5B. —58-year-old man with gastrointestinal stromal tumor of duodenum with multiple liver metastases. Contrast-enhanced CT scan obtained during arterial phase shows multiple small high-attenuating lesions (arrows) in liver.

 


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  		Fig. 5C. —58-year-old man with gastrointestinal stromal tumor of duodenum with multiple liver metastases. Contrast-enhanced CT scan obtained during portal venous phase shows no focal lesion in liver.

 

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