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“哨兵结节”。在我们的结果中，特别是CT淋巴造影有助于显示原发肿瘤附近的过境淋巴结和通过舌骨旁区域的淋巴引流途径。舌骨旁区域复发的病变治疗效果和预后较差，但舌骨旁淋巴结的前哨淋巴结活检因其位置深而被认为不现实。从舌骨旁复发的预测角度来看，CT淋巴造影可以检查舌骨旁区域的淋巴引流途径是否通过颌下腺内侧。

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.