杤尾 人司¹, 冨田 周介², 工藤 正俊², 平佐 昌弘², 樫田 博史², 岡部 純弘², 三村 純², 尾上 一美¹, 簑輪 和士¹, 浜田 充生¹, 島田 啓子¹, 森本 義人¹, 伊吹 康良¹, 小森 英司², 織野 彬雄², 藤堂 彰男²

Hitoshi TOCHIO¹, Syusuke TOMITA², Masatoshi KUDO², Masahiro HIRASA², Hiroshi KASHIDA², Yoshihiro OKABE², Jun MIMURA², Kazumi ONOUE¹, Kazushi MINOWA¹, Michio HAMADA¹, Keiko SHIMADA¹, Yoshito MORIMOTO¹, Yasuyoshi IBUKI¹, Hideshi KOMORI², Akio ORINO², Akio TODO²

¹神戸市立中央市民病院　腹部超音波室, ²神戸市立中央市民病院　消化器センター内科

¹Section of Abdominal Ultrasound, Kobe City General Hospital, ²Division of Gastroenterology, Kobe City General Hospital

キーワード : Hepatic Tumor, US angiography, Arterial Vascularity

The ultrasound (US) imaging under hepatic arterial infusion of carbon dioxide microbubbles, a contrast agent for US, (US angiography) was performed on a total of 85 patients with a variety of 95 hepatic nodules; 62 hepatocellular carcinomas (HCC), 10 adenomatous hyperplasias (AH), 5 regenerative nodules (RN), 6 metastatic liver cancers (MLC), 2 focal nodular hyperplasias (FNH), and 9 hemangiomas. The diagnosis of all hepatic tumors except 9 hemangiomas were cofirmed histologically. The tumors were imaged from the very begining of the CO₂ injection (early phase) up to the moment of complete washout from the liver (late phase). Out of the 62 HCC_S, 53 (85%) were demonstrated to be hypervascular, 7 (11%) were isovascular, and 2 (3%) were hypovascular. In contrast, tumor stain was demonstrated in only 36 (58%) out of 62 HCC_S with conventional angiography. US angiography also contributed to the differential diagnosis of the hepatic tumors by demonstrating specific vascular patterns of MLC, hemangioma, FNH, and AH. We concluded that US angiography is extremely useful in the differential diagnosis of hepatic tumors, and furthermore, that it is also useful in the determination of treatment option for HCC.