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Introduction of $7^{th}$ AJCC TNM Staging for Liver and Intrahepatic Bile Duct Malignancies  

Song, Tae-Jin (Department of Surgery, Korea University College of Medicine, Ansan Hospital, Korea University Medical Center)
Publication Information
Annals of Hepato-Biliary-Pancreatic Surgery / v.14, no.2, 2010 , pp. 69-72 More about this Journal
Abstract
Purpose: Cancer staging is essential in clinical cancer practice in medical and surgical oncology. Staging based on the guidelines of the American Joint Committee on Cancer (AJCC) is the most popular and is widely used in clinical fields. Early this year, the $7^{th}$ edition of the AJCC cancer staging manual was published. I have compared and described the changes in the new edition from the older version to facilitate staging in clinical settings, especially for liver and intrahepatic bile duct malignancies. Methods: On the basis of the new 2010 edition of the $7^{th}$ AJCC TNM cancer staging manual, I have compared hepatobiliary malignancy in Chapter 18, liver malignancy and intrahepatic bile duct malignancy in Chapter 19. Results: One of the major changes in the $7^{th}$ AJCC manual compared to the $6^{th}$ AJCC staging manual published in 2002 is separation of the Liver and Intrahepatic bile duct cancer chapters. In the previous edition, intrahepatic bile duct cancer was included in the liver malignancy chapter. Conclusion: There are no universal and permanent staging systems for cancer. The staging systems are ever changing to adjust for changes in treatment and prognosis of malignancies. We need to collect data in order to modify the staging correctly in collaboration with multi-institutional efforts to reduce biases in staging liver and intrahepatic bile duct cancers.
Keywords
$7^{th}$ AJCC TNM stage; Liver malignancy; Intrahepatic bile duct malignancy;
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