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  • Title: Liver metastasis following pneumoperitoneum with different gases in a mouse model.
    Author: Ishida H, Idezuki Y, Yokoyama M, Nakada H, Odaka A, Murata N, Fujioka M, Hashimoto D.
    Journal: Surg Endosc; 2001 Feb; 15(2):189-92. PubMed ID: 11285965.
    Abstract:
    BACKGROUND: The validity of using CO2 in laparoscopic tumor surgery has not yet been established. To address this question, we investigated the growth of liver metastases following insufflation with different gases in a mouse laparoscopy model. METHODS: Male BALB/C mice inoculated intraportally with colon 26 cells were randomized to undergo pneumoperitoneum with CO2 (n = 16), helium (n = 16), argon (n = 16), or air (n = 17), or to act as controls without insufflation (n = 17). RESULTS: The growth of cancer nodules on the liver 14 days after surgery was greater in mice following insufflation with CO2 (p < 0.01), helium (p < 0.01), argon (p = 0.01), and air (p = 0.07) than in control mice. No significant differences were found between the four insufflation groups in the growth of liver metastases. CONCLUSION: These results suggest that insufflation plays an important role in the development of liver metastases but that the choice of gas may not affect their growth.
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