Published in:
01-01-2010 | Original Article
Modified neoadjuvant short-course radiation therapy in uT3 rectal carcinoma: low local recurrence rate with unchanged overall survival and frequent morbidity
Authors:
Rainer Kube, Henry Ptok, David Jacob, Jörg Fahlke, Pawel Mroczkowski, Hans Lippert, Gunther Ziegenhardt, Uwe Schmidt, Ingo Gastinger
Published in:
International Journal of Colorectal Disease
|
Issue 1/2010
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Abstract
Purpose
The purpose of this study is to investigate the value of a modified neoadjuvant short-course radiation therapy (SCRT) in uT3 rectal carcinoma, which, despite local R0 resectability, carries a greater risk of local recurrence than less invasive carcinomas.
Methods
Sixty-three patients with uT3 rectal carcinoma ≤10 cm above the anal verge received a modified 8 × 3 Gy pre-operative SCRT. Radiation-associated and peri-operative complications were recorded, and the patients were followed up for long-term oncological outcome and morbidity.
Results
In the study group, there were no severe adverse radiation-associated effects; the rate of peri-operative morbidity was 54.0% and that of in-hospital mortality is 4.8%. The probability (Kaplan–Meier estimate) of local recurrence was 3.9% with a probability of metachronic distant metastases of 26.8% (5-year rates). We found the probability of 5-year disease-free survival to be 70.5% and that of 5-year overall survival, 59.5%. Long-term complications were reported for 31.7% of patients.
Conclusions
Compared to the literature-modified 8 × 3 Gy neoadjuvant SCRT and surgery in uT3, rectal carcinoma was associated with low local recurrence but frequent peri-operative complications. The decisive prognostic factor, distant metastasis, was unaffected. Difficulties included overestimation of tumour invasion depth by endosonography. Possible clinical consequences of the results are discussed.