Asano Hiroshi, Fukano Hiroyuki, Takagi Makoto, Takayama Tetsuyoshi
Saitama Medical University, Department of General Surgery, Japan.
Saitama Medical University, Department of General Surgery, Japan.
Asian J Surg. 2023 Jan;46(1):201-206. doi: 10.1016/j.asjsur.2022.03.026. Epub 2022 Mar 21.
BACKGROUND: Patients with perforated colorectal cancer (PCRC) experience higher recurrence rates than those with non-perforated tissue. We identified the promoting factors of stage II PCRC recurrence after R0 surgery. METHOD: This retrospective observational study included patients treated for colorectal cancer at a single facility between 2007 and 2016, and compared the clinicopathological features of patients with perforating versus non-perforating stage II tumors who underwent R0 resection, while focusing on recurrences. RESULTS: Thirty-two and 112 patients (predominantly men) with perforating and non-perforating tumors, respectively, were included. The perforated group had significantly higher proportions of T4 tumors than the non-perforated group (44% vs. 15%). The perforated group had significantly lower numbers of resected lymph nodes than the non-perforated group (6 vs. 17). Seven of 17 patients with follow-up data in the perforated group experienced recurrence (41%), versus 19 of 104 in the non-perforated group (18%). In the non-perforated group, male sex (89% vs. 60%, p = 0.030), T4 stage (32% vs. 9%, p = 0.029), and fewer resected lymph nodes (12.5 vs. 18.6, p = 0.003) were significantly associated with recurrence; however, no such influences on recurrence were observed in the perforated group. The recurrence sites in the perforated group were mostly local (6 patients, 86%). Conversely, recurrences in the non-perforated group were mostly distant; 8 of 19 patients (42%) had liver metastasis and 1 (5%) had lung metastasis. CONCLUSION: Patients with stage II PCRC experienced higher recurrence rates regardless of clinicopathological features and had high local recurrence rates indicating possible local tumor cell dispersal owing to perforation.
背景:结直肠癌穿孔(PCRC)患者的复发率高于非穿孔组织患者。我们确定了R0手术后II期PCRC复发的促进因素。 方法:这项回顾性观察性研究纳入了2007年至2016年期间在单一机构接受结直肠癌治疗的患者,比较了接受R0切除的穿孔性与非穿孔性II期肿瘤患者的临床病理特征,同时关注复发情况。 结果:分别纳入了32例和112例穿孔性和非穿孔性肿瘤患者(主要为男性)。穿孔组T4肿瘤的比例显著高于非穿孔组(44%对15%)。穿孔组切除的淋巴结数量显著低于非穿孔组(6个对17个)。穿孔组17例有随访数据的患者中有7例复发(41%),而非穿孔组104例中有19例复发(18%)。在非穿孔组中,男性(89%对60%,p = 0.030)、T4期(32%对9%,p = 0.029)和切除的淋巴结较少(12.5个对18.6个,p = 0.003)与复发显著相关;然而,在穿孔组中未观察到对复发有此类影响。穿孔组的复发部位大多在局部(6例,86%)。相反,非穿孔组的复发大多在远处;19例患者中有8例(42%)发生肝转移,1例(5%)发生肺转移。 结论:II期PCRC患者无论临床病理特征如何,复发率都较高且局部复发率高,表明由于穿孔可能存在局部肿瘤细胞扩散。
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