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直肠癌的准确分期对手术及其是否需要辅助治疗非常重要。术前分期的目的在于尽可能准确评估影响预后和复发的两个重要因素,即直肠壁的浸润深度(T 分期)以及直肠系膜的淋巴结有无转移(N分期)。
The exact stage of rectal cancer is very important for surgery and whether it requires adjuvant therapy. The purpose of preoperative staging is to assess as accurately as possible the two important factors influencing prognosis and recurrence, namely the depth of invasion of the rectal wall (T staging) and the presence or absence of lymph node metastasis (N staging) in the mesorectum.