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01.12.2019 | Research | Ausgabe 1/2019 Open Access

World Journal of Surgical Oncology 1/2019

Survival analysis of local excision vs total mesorectal excision for middle and low rectal cancer in pT1/pT2 stage and intermediate pathological risk

Zeitschrift:
World Journal of Surgical Oncology > Ausgabe 1/2019
Autoren:
I-Li Lai, Jeng-Fu You, Yih-Jong Chern, Wen-Sy Tsai, Jy-Ming Chiang, Pao-Shiu Hsieh, Hsin-Yuan Hung, Chien-Yuh Yeh, Sum-Fu Chiang, Cheng-Chou Lai, Rei-Ping Tang, Jinn-Shiun Chen, Yu-Jen Hsu
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Abstract

Background

Local excision (LE) is a feasible treatment approach for rectal cancers in stage pT1 and presents low pathological risk, whereas total mesorectal excision (TME) is a reasonable treatment for more advanced cancers. On the basis of the pathology findings, surgeons may suggest TME for patients receiving LE. This study compared the survival outcomes between LE with/without chemoradiation and TME in mid and low rectal cancer patients in stage pT1/pT2, with highly selective intermediate pathological risk.

Methods

This retrospective study included 134 patients who received TME and 39 patients who underwent LE for the treatment of intermediate risk (pT1 with poor differentiation, lymphovascular invasion, perineural invasion, relatively large tumor, or small-sized pT2 tumor) rectal cancer between 1998 and 2016.

Results

Overall survival (OS), disease-free survival (DFS), and cumulative recurrence rate (CRR) were similar between the LE (3-year DFS 92%) and TME (3-year DFS 91%) groups. Following subgrouping into an LE with adjuvant therapy group and a TME without adjuvant therapy group, the compared survival outcomes (OS, DFS, and CRR) were found not to be statistically different. The temporary and permanent ostomy rates were higher in the TME group than in the LE group (p < 0.001). Rates of early and late morbidity following surgery were higher in the TME group (p = 0.005), and LE had similar survival compared with TME.

Conclusion

For patients who had mid and low rectal cancer in stage pT1/pT2 and intermediate pathological risk, LE with chemoradiation presents an alternative treatment option for selected patients.
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