Journal
WORLD JOURNAL OF GASTROINTESTINAL SURGERY
Volume 13, Issue 5, Pages 392-405Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4240/wjgs.v13.i5.392
Keywords
Liver transplantation; Transplant oncology; Intrahepatic cholangiocarcinoma; Hepatocellular carcinoma; Colorectal metastases; Mixed hepatocholangiocarcinoma
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Funding
- NIDDK NIH HHS [K08 DK118187] Funding Source: Medline
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Despite advances in liver transplantation for certain malignancies such as hepatocellular carcinoma and hilar cholangiocarcinoma, the application of liver transplantation in the setting of gastrointestinal malignancies remains controversial. Tumor biology and response to therapy are key factors for optimal oncologic outcomes, while patient and tumor selection protocols are necessary for successful outcomes. Further investigation is needed to determine the expanded role of liver transplantation in malignancy in a new era of liver transplant oncology.
Y Despite numerous advances and emerging data, liver transplantation in the setting of gastrointestinal malignancies remains controversial outside of certain accepted indications. In an era of persistent organ shortage and increasing organ demand, allocation of liver grafts must be considered carefully. While hepatocellular carcinoma and hilar cholangiocarcinoma have become accepted indications for transplantation, tumor size and standardized multi-disciplinary treatment protocols are necessary to ensure optimal patient outcomes. As more studies seeking to expand the oncologic indications for liver transplantation are emerging, it is becoming increasingly clear that tumor biology and response to therapy are key factors for optimal oncologic outcomes. In addition, time from diagnosis to transplantation appears to correlate with survival, as stable disease over time portends better outcomes post-operatively. Identifying aggressive disease pre-transplant remains difficult with current imaging and tissue sampling techniques. While tumor size and stage are important prognostic predictors for most malignancies, patient and tumor selection protocols are necessary. As the fields of medical and surgical oncology continue to evolve, it is clear that a protocolized interdisciplinary treatment approach is necessary for combatting any cancer effectively. Disease stability over time and response to neoadjuvant therapy may be the best predictors for successful patient outcomes and can be easily incorporated in our treatment paradigms. Current data evaluating liver transplantation for expanded oncologic indications such as: expanded criteria hepatocellular carcinoma, intrahepatic cholangiocarcinoma, mixed tumors, and liver limited metastatic colorectal carcinomas, incorporate multi-modal therapies and evaluation of tumor treatment response. While further investigation is necessary, initial results suggest there is an expanded role for transplant surgery in malignancy in a new era of liver transplant oncology.
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