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Dual-Phase Versus Single-Phase Helical CT to Detect and Assess Resectability of Pancreatic Carcinoma

Massimo Imbriaco1,2, Alec J. Megibow3, Luigi Camera1,2, Leonardo Pace1,2, Pier Paolo Mainenti1,2, Maurizio Romano1,2, Guerino Selva1 and Marco Salvatore1

1 Department of Radiology, University "Federico II," Via Pansini 5, 80131 Napoli, Italy.
2 National Research Council, Via Pansini 5, 80131 Napoli, Italy.
3 Department of Radiology, New York University School of Medicine, 550 First Ave., New York, NY 10016.



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  		Fig. 1A. —75-year-old man with nonresectable adenocarcinoma of uncinate process detected using single-phase helical CT. Axial CT image shows tumor as low-density area with 15-mm maximum diameter in uncinate process (arrow). Tumor extends along medial profile of superior mesenteric artery.

 


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  		Fig. 1B. —75-year-old man with nonresectable adenocarcinoma of uncinate process detected using single-phase helical CT. Axial images more cranial than A show tumor extension into splenomesentery—portal vein confluence (arrows).

 


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  		Fig. 1C. —75-year-old man with nonresectable adenocarcinoma of uncinate process detected using single-phase helical CT. Axial images more cranial than A show tumor extension into splenomesentery—portal vein confluence (arrows).

 


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  		Fig. 2A. —68-year-old man with resectable adenocarcinoma of uncinate process detected using single-phase helical CT. Axial CT image shows tumor as low-density area (arrow) with 8-mm maximum diameter.

 


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  		Fig. 2B. —68-year-old man with resectable adenocarcinoma of uncinate process detected using single-phase helical CT. Axial image more cranial than A shows no invasion of splenomesentery—portal vein confluence.

 


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  		Fig. 3A. —77-year-old woman with nonresectable adenocarcinoma of pancreatic head detected on dual-phase helical CT. Arterial phase CT image shows low-attenuation mass in region of pancreatic head and infiltration of superior mesenteric artery (arrow).

 


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  		Fig. 3B. —77-year-old woman with nonresectable adenocarcinoma of pancreatic head detected on dual-phase helical CT. Portal phase image obtained at same level as A shows presence of multiple liver metastases.

 

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