下部直腸癌に対する肛門括約筋温存術式の術後肛門機能に関する研究

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Clinical and manometric anal function after sphincter-preserving operation for lower rectal cancer was analyzed in relation to the level of anastomosis (above 4cm vs. within 4cm from the anal verge) and the range of lymph node dissection (lateral lymph node dissection vs. no lateral lymph node dissection). <BR>In the early postoperative stage, the group with a level of anastomosis within 4cm from the anal verge showed poor internal anal sphincter function and poor fecal reservoir function compared with the group with a level above 4cm from the anal verge. However, after more than one postoperative year, anal dysfunction recovered to a satisfactory level. <BR>There was no significant difference in anal function in relation to the range of lymph node dissection. <BR>The function of the external anal sphincter was completely preserved in all types of sphincter-preserving operation. <BR>These results suggest that when an adequate surgical margin with preservation of the anal canal are confirmed, sphincter-preserving operation is justified in the treatment of lower rectal cancer.
日本大腸肛門病学会の論文