Weese J L, O'Grady M G, Ottery F D
Surg Gynecol Obstet. 1986 Aug;163(2):101-3.
Five centimeters is often taught to be the minimal safe margin of resection distal to a colonic or rectal tumor. The actual time at which this margin is measured can greatly alter the recorded length. We studied the length of the distal margin in ten patients who underwent colonic resection. Depending upon the time that it was measured, a margin of 5.0 centimeters, unstretched in situ, was noted to shrink to as little as 1.9 centimeters. Studies which have advocated a shorter margin distal to carcinoma of the colon and rectum, which do not define the time at which the margin was measured, could give a surgeon inappropriate confidence in an inadequate tumor margin.
通常认为，距结肠或直肠肿瘤远端5厘米是切除的最小安全切缘。测量该切缘的实际时间会极大地改变记录的长度。我们研究了10例行结肠切除术患者的远端切缘长度。根据测量时间的不同，发现原位未拉伸时5.0厘米的切缘可缩小至仅1.9厘米。那些主张对结肠和直肠癌远端采用较短切缘，但未明确切缘测量时间的研究，可能会让外科医生对不充分的肿瘤切缘产生不恰当的信心。
