Abstract
Subtotal removal of high-risk organs is of uncertain value as cancer prophylaxis. This study examined to what extent partial colectomy prevented carcinogen-induced large bowel tumors. Male Fischer 344 rats (N = 98) were given five weekly subcutaneous injections of azoxymethane 7 mg/kg, then treated as follows: group I (controls), the ileocecal junction was divided and reanastomosed without resection; group II, a proximal 1/3 colon resection was performed; and group III, a proximal 2/3 colon resection was performed. After 7 months the rats were sacrificed and colorectal tumors confirmed histologically. Sixty-nine animals survived for analysis. Tumor incidence and average number of tumors per rat were not significantly changed by resection. Surgical prophylaxis was compromised by a high frequency of multiple tumors and by a higher than expected frequency of tumors in the remaining bowel.
Original language | English (US) |
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Pages (from-to) | 321-326 |
Number of pages | 6 |
Journal | Cancer Detection and Prevention |
Volume | 10 |
Issue number | 5-6 |
State | Published - 1987 |
ASJC Scopus subject areas
- Oncology
- Cancer Research