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Commentary |

A Handy Tool to Teach Segmental Liver Anatomy to Surgical Trainees

Eric M. Pauli, MD; Kevin F. Staveley-O'Carroll, MD, PhD; Malcolm V. Brock, MD; David T. Efron, MD; Gershon Efron, MD
Arch Surg. 2012;147(8):692-693. doi:10.1001/archsurg.2012.689.
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Sound knowledge of hepatic anatomy is a prerequisite for anatomical surgery of the liver.1 In an era in which new technology and new techniques have increased the indications for hepatic surgery and improved the mortality rates after such procedures,2 this statement rings more true now than ever. With hepatic resections being performed more frequently worldwide, more surgical trainees are exposed to these operative procedures.3 Therefore, there is a greater call for understanding functional hepatic anatomy4; a surgeon's knowledge of hepatic anatomy commonly determines a patient's outcome.5

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Figure 1. Couinaud segments 1 through 8. A, Segments overlaid on a model of the liver. R indicates right portal vein; L, left portal vein. B, Segments overlaid on a model of the right hand. The caudate lobe (segment 1) is represented by the thumb tucked behind the other digits.

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Figure 2. Right (R), middle (M), and left (L) hepatic veins demonstrating the 4 hepatic divisions and 2 hemi-livers. A, Veins overlaid on a model of the liver; B, veins overlaid on a model of the right hand.

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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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