Ascending mesocolon membrane 8.3% and mesosigmoid membrane 3.3%. 升结肠系膜为8.3%;
It was unveiled in the operation window posterior to mesosigmoid formed by pulling the mesentery and keeping vertical angle to the aorta. 牵引乙状结肠系膜使IMA与主动脉保持垂直状态,可形成系膜后操作窗,顺利暴露IMA根部。