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Single-Wall Puncture: A New Technique for Percutaneous Transhepatic Biliary Drainage

Sang H. Lee1, Seong T. Hahn1, Hyung J. Hahn2 and Kyung J. Cho3

1 Department of Radiology, St. Mary's Hospital, The Catholic University of Korea, #62, Youido-dong, Yongdungpo-gu, Seoul 150-010, Korea.
2 College of Medicine, Konkuk University, #322, Danwol-dong, Chungju 380-701, Korea.
3 Department of Radiology, University of Michigan Hospital, 1500 E. Medical Center Dr., Ann Arbor, MI 48109-0030.



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  		Fig. 1. —Photograph shows puncture set for single-wall puncture technique. Sixty-centimeter, 0.018-inch guidewire is introduced into puncture needle with its tip positioned in needle tip (arrow).

 


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  		Fig. 2A. —Single-wall puncture in 57-year-old man with carcinoma of pancreas head. Cholangiogram was obtained using single-wall puncture technique. Note ductal puncture (arrow) made at periphery of right hepatic duct, 3 cm from liver capsule.

 


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  		Fig. 2B. —Single-wall puncture in 57-year-old man with carcinoma of pancreas head. Cholangiogram obtained after further injection of contrast medium shows numerous dilated bile ducts that might have been damaged by conventional double-wall puncture technique.

 

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