[Concept and clinical application of surgical margin principle on head and neck cancers].

Surgical margin principle is one of the central surgical principles for head and neck cancers. Negative surgical margin is the primary purpose of surgery for head and neck cancers. This paper is based on the current clinical application of surgical margins of head and neck cancers, and it is proposed that surgical margins of head and neck cancers may be classified into three types: surface margin, deep margin, and tissue interface margin in consideration of surgical exposure of tumors. The classification of surgical margins can make the clinical application and the research of surgical margins of head and neck cancers more systematic and clear.外科切缘是头颈肿瘤外科原则中的核心内容，获得阴性的外科切缘从而根治肿瘤是头颈恶性肿瘤手术最主要的目的。本文梳理了头颈肿瘤外科切缘的临床应用现状，并从手术操作暴露肿瘤角度，提出头颈恶性肿瘤外科切缘可以分为表面切缘、深面切缘及组织界面切缘三种类型的外科切缘。这种切缘的分类可以使得头颈肿瘤外科切缘的临床应用与相关研究变得更为系统与清晰。.