Enthusiasm about the application of videolaparoscopy to oncologic diseases has been limited by the growing number of port site implants. Adult Wistar rats were submitted to 6-7 mm Hg carbonic gas pneumoperitoneum. Rats were randomly divided into two groups: group I rats with tumor (200,000 viable cells of Walker tumor) and group 11 rats with no tumor. The pneumoperitoneum was deflated after 30 min. Group I was further randomized into five groups: no treatment; or abdominal irrigation with saline, heparin, chemotherapy (doxorubicin), or chemotherapy associated with heparin. After a period lasting no more than 18 days, the abdominal wall and intraperitoneal organs macroscopically affected were studied histologically. Chemotherapy groups had no port site implants and were significantly different (p < 0.05) than the no treatment, saline, and heparin solution groups, which had incisional implants at frequencies of 100%, 85.7%, and 82.5%, respectively. Intraperitoneal irrigation with chemotherapy solution was effective in preventing incisional implants in this animal model.
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