In the majority of cases (95.1%), the middle hepatic vein formed a common trunk with the left hepatic vein, while the three major hepatic veins were independent in 4.9% cases.

绝大多数情况下(95.1%)肝中、肝左静脉合并，而三大支肝静脉单独汇入下腔静脉仅占4.9%。

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Prof Swanton said the findings underlined the importance of early diagnosis of cancer before it had spread, and the need to target the common mutations in the 'trunk' of the cancer.

BBC: DNA analysis shows huge genetic diversity in tumours

Holding or pulling people under water, grabbing, pushing, eye-gouging or swimming trunk yanking are very common!

BBC: Last Updated: Friday October 28 2005 17:05 GMT