Preoperative chemoradiotherapy in patients with locally advanced rectal cancer.
Hepatogastroenterology
; 52(64): 1095-100, 2005.
Article
in En
| MEDLINE
| ID: mdl-16001638
ABSTRACT
BACKGROUND/AIMS:
To determine the percentage of responders and the resectability rate for patients with locally advanced carcinoma of the rectum treated by infusional 5-fluorouracil chemotherapy and pelvic radiation.METHODOLOGY:
Twenty-four patients with a diagnosis of locally advanced unresectable rectal cancer received preoperative 5-fluorouracil by intravenous infusion at the dose of 250-300mg/m2/day concurrent with pelvic radiation (median 50.4 Gy/28 fractions). Surgery was performed with a mean delay of 15 days after completion of irradiation and included 11 abdominoperineal resections and five anal sphincter-preserving procedures.RESULTS:
The median follow-up was 22 months. Complete histological response occurred in 6%, and tumor down-staging in 58% of cases. There was a significant difference in the rate of local control based on the distance of the tumor from the anal verge (>5.4cm; p=0.046). Our results have suggested the importance of the total dose on the local control (p=0.061). Higher local failure rate has been observed with prolonged treatment time (p=0.018). With metastasis-free survival as the endpoint, only stage (p=0.027) was a statistically significant prognostic factor.CONCLUSIONS:
The favorable influence of higher doses of preoperative radiotherapy on pathologic stage has been observed. Even after preoperative radiotherapy, postoperative staging remained a prognostic factor.
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Database:
MEDLINE
Main subject:
Rectal Neoplasms
/
Adenocarcinoma
Type of study:
Observational_studies
/
Prognostic_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Year:
2005
Type:
Article