The devise of a diagnostic imaging method using CT lymphography focus on high risk lymph node

目的探讨CT淋巴造影对cN0舌癌高危淋巴结的诊断价值。在我们的研究中，“高危淋巴结”对应于所谓的“前哨淋巴结”。在我们的研究结果中，特别是CT淋巴造影有助于显示靠近原发肿瘤的过境淋巴结和通过舌骨旁区域引流的淋巴通路。舌骨旁区域复发性病变显示了较差的治疗效果和预后，但舌淋巴结的前哨淋巴结活检由于位置较深而被认为是不现实的。从预测舌骨旁复发的角度来看，我们可以通过CT淋巴造影检查舌的淋巴引流途径是否经过下颌下腺内侧。

To evaluate the feasibility of a diagnostic imaging focused on high risk lymph node using CT lymphography in cN0 tongue cancer. In our study, "high risk lymph node" is correspond to so called "sentinel node". In our result, particularly CT lymphography was useful to visualize the in-transit lymph node close to the primary tumor and the lymph pathway draining through the para-hyoid area.Recurrent lesion at para-hyoid area showed poor treatment results and the prognosis, however the sentinel node biopsy of the lingual lymph node is not considered realistic because of its deep location.From the viewpoint of the prediction of the para-hyoid recurrence, we can check whether a lymphatic drainage pathway from the tongue passes through the medial side of the submandibular gland or not by using CT lymphography.