Major anatomical hepatic resection with regional lymph node dissection for liver metastases from colorectal cancer |
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Authors: | Kenzo Yasui Takashi Hirai Tomoyuki Kato Takeshi Morimoto Akihito Torii Katsuhiko Uesaka Yasuhiro Kodera Yoshitaka Yamamura and Tuyoshi Kito |
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Institution: | (1) Department of Gastroenterological Surgery, The Aichi Cancer Center, 1-1 Kanokoden, Chikusa-ku, 464 Nagoya, Japan |
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Abstract: | Sixty-four patients with liver metastases from colorectal cancer were studied to clarify the characteristics of the regional
spread of liver metastases (secondary invasive factors) and the effects of major anatomical hepatic resection with lymph node
dissection on reducing liver recurrence. No secondary invasive factors, i.e., lymph node metastasis, portal or hepatic vein
involvement, bile duct involvement, micrometastasis, and direct invasion, were observed in patients with liver metastases
less than 3 cm in diameter (5-year survival rate; 100%). Secondary invasive factors were seen in 19.2% of the patients with
liver metastases from 3 cm to less than 6 cm (5-year survival rate; 28.7%), and in 45.2% of those with liver metastases 6
cm and over (5-year survival rate; 14.6%). Secondary invasive factors were noted in 45% of the patients with recurrence in
the remmant liver. Although 31% of all 64 patients exhibited secondary invasive factors, major anatomical hepatic resection
with lymph node dissection achieved a low liver recurrence rate of 31.3%. In conclusion, considering the risks attributed
to secondary invasive factors, major anatomical hepatic resection with lymph node dissection is an appropriate surgical procedure
for patients with liver metastases exceeding 3 cm in diameter. |
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Keywords: | liver metastases secondary invasive factors anatomical major hepatectomy lymph node dissection |
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