Ryu M, Watanabe Y, Ozaki M, Yamamoto H, Uematsu S, Sato H
Nihon Geka Gakkai Zasshi. 1983 Sep;84(9):904-7.
Recently small hepatocellular carcinoma are frequently diagnosed due to the improvement of medical imaging techniques. Main tumors including one with diameter of 1 cm were definitely diagnosed by the combined use of US and CT. US and angiographic examination were useful in definitely detecting tumor emboli in the main trunk even to the subsegmental level of the portal vein. All of the 12 daughter nodules of diameter over 1 cm could be definitely diagnosed by any examinations. However, diagnostic accuracy was in detecting 11 daughter nodules of diameter below 1 cm as the following data shown; one was positive using US, six were positive using CT, and three were positive using angiography. Sequential moving scan technique during the late phase could make definite preoperative diagnosis of small daughter nodule of diameter below 1 cm. Owing to the improvement of the imaging diagnostic technique, we can obtain accurate preoperative information concerning the presence or absence of daughter nodule and tumor emboli in the portal vein. Therefore, we can select suitable candidates for surgical excision or other combined therapy.
近年来，由于医学成像技术的进步，小肝细胞癌的诊断率不断提高。主要肿瘤（包括直径为1厘米的一个肿瘤）通过超声和CT联合检查得以明确诊断。超声和血管造影检查对于明确检测门静脉主干甚至门静脉亚段水平的肿瘤栓子很有用。所有12个直径超过1厘米的子结节均可通过任何检查明确诊断。然而，对于直径小于1厘米的11个子结节的诊断准确性如下所示：超声检查阳性1个，CT检查阳性6个，血管造影检查阳性3个。晚期的连续移动扫描技术可以对直径小于1厘米的小子结节进行明确的术前诊断。由于成像诊断技术的进步，我们可以获得关于门静脉中是否存在子结节和肿瘤栓子的准确术前信息。因此，我们可以选择合适的手术切除或其他联合治疗的候选者。
