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Clinical Trial
. 1999 Jul;230(1):49-54.
doi: 10.1097/00000658-199907000-00008.

Long-term follow-up of patients with rectal cancer managed by local excision with and without adjuvant irradiation

Affiliations
Clinical Trial

Long-term follow-up of patients with rectal cancer managed by local excision with and without adjuvant irradiation

A Chakravarti et al. Ann Surg. 1999 Jul.

Abstract

Objective: The long-term outcomes of patients undergoing local excision with or without pelvic irradiation were examined to define the role of adjuvant irradiation after local excision of T1 and T2 rectal cancers.

Methods: Ninety-nine patients with T1 or T2 rectal cancers underwent local excision with or without adjuvant irradiation at Massachusetts General Hospital and Emory University Hospital between January 1966 and January 1997. Of these, 52 patients were treated by local excision alone and 47 patients by local excision plus adjuvant irradiation. Twenty-six of these 47 patients were treated by irradiation in combination with 5-fluorouracil chemotherapy. The outcomes of these groups were compared.

Results: The 5-year actuarial local control and recurrence-free survival rates were 72% and 66%, respectively, for the local excision alone group and 90% and 74%, respectively, for the adjuvant irradiation group. This improvement in outcome was evident despite the presence of a higher-risk patient population in the adjuvant irradiation group. Adverse pathologic features such as poorly differentiated histology and lymphatic or blood vessel invasion decreased local control and recurrence-free survival rates in the local excision only group. Adjuvant irradiation significantly improved 5-year outcomes in patients with high-risk pathologic features. Four cases of late local recurrence were seen at 64, 72, 86, and 91 months in the adjuvant irradiation group.

Conclusions: The authors recommend adjuvant chemoradiation for all patients undergoing local excision for T2 tumors, and for T1 tumors with high-risk pathologic features. The four cases of late local failures beyond 5 years in the adjuvant irradiation group underscores the need for careful long-term follow-up in these patients.

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Figures

None
Figure 1. Actuarial local control rate.
None
Figure 2. Actuarial recurrence-free survival rate.

Comment in

  • Transanal endoscopic microsurgery (TEM).
    Daniels IR, Simson JN. Daniels IR, et al. Ann Surg. 2000 Apr;231(4):614. doi: 10.1097/00000658-200004000-00025. Ann Surg. 2000. PMID: 10749624 Free PMC article. No abstract available.

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