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To the Editor:rnWhether orthotopic liver transplantation requires the place- ment of an abdominal drainage system is a controversial topic. A number of studies have suggested that prophylactic placement of abdominal drainage systems do not improve the diagnostic rate of complications such as bile leakage and hemorrhage after liver transplantation, even increased the risk of infection [1–3] . How- ever, there is no uniform standard for the selection of drainage tube and how to place the drainage tube in orthotopic liver trans- plantation. The types and placement modes of the drainage tubes used in each center are different. If adequate drainage is not possi- ble, it may affect the drainage efficiency, which may lead to the misunderstanding that “it is unnecessary to place the drainage tube”. Herein we aimed to explore the most efficient abdominal drainage in modified piggyback orthotopic liver transplantation, based on the types and placement modes of drainage tubes in our clinical practice.