Cancer cells may leave the primary tumor by one of two routes: either through hematogenous dissemination via blood circulation or by dissemination via the lymphatic system.

肿瘤细胞可能通过以下两种途径之一脱离原发部位，亦即通过血流播散或通过淋巴系统离开原发部位。

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Cancer cells may leave the primary tumor by one of two routes: either through hematogenous dissemination via blood circulation or by dissemination via the lymphatic system.

肿瘤细胞可能通过以下两种途径之一脱离原发部位，亦即通过血流播散或通过淋巴系统离开原发部位。

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