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Manuel H. Castillo, MD; Ralph J. Doerr, MD; Norman Paolini, Jr, MS; Stephen Cohen, PhD; Martin Goldrosen, PhD

Arch Surg. 1989;124(2):167-169.

Abstract
• Resection of hepatic metastases from colorectal cancer has been shown to prolong survival in some patients. Whether this results from a reduction of tumor burden or is an indirect effect mediated by hepatectomy is questionable. Male C57BL/6Ros 8-week-old mice underwent ileocolic vein injection of a suspension of 0.3 mL of 2x10⁵ viable liver-derived murine (MCA-38) colonic adenocarcinoma cells. This model produces hepatic metastases in all lobes of the liver. At 7,14, or 21 days after tumor injection, mice were randomized to receive either 42% resection of the liver or laparotomy alone. Survival in the animals with hepatectomy was significantly prolonged when the hepatectomy was performed 14 or 21 days after tumor injection.

(Arch Surg 1989;124:167-169)

Author Affiliations
From the Department of Surgery, State University of New York at Buffalo (Drs Castillo and Doerr), and Roswell Park Memorial Institute, Buffalo (Mr Paolini, and Drs Cohen and Goldrosen).

Footnotes
Accepted for publication Oct 13, 1988.

Read before the Annual Meeting of the Society of Surgical Oncology, New Orleans, May 23, 1988.

Reprint requests to Department of Surgery, Veterans Administration Medical Center, 3495 Bailey Ave, Buffalo, NY 14215 (Dr Castillo).

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