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

Hitoshi TOCHIO¹, Syusuke TOMITA², Yoshihiro OKABE², Masatoshi KUDO², Hiroshi KASHIDA², Kazushi MINOWA¹, Keiko SHIMADA¹, Michio HAMADA¹, Jun MIMURA², Kazumi HAMADA¹, Masahiro HIRASA², Yasuyoshi IBUKI², Hideshi KOMORI², Akio ORINO², Yoshito MORIMOTO¹, Akio TODO²

¹神戸市立中央市民病院臨床病理科腹部超音波室, 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, Color Doppler flow imaging, Central color flow signal

In this study, we evaluated the usefulnes of color Doppler flow imaging in the differential diagnosis of various hepatic tumors. Color Doppler flow imaging was performed in 250 patients representing 284 cases of hepatic nodules; 184 cases of hepatocellular carcinoma(HCC), 44 cases of metastatic liver cancer(MLC), and 56 cases of hemangioma. The detectability rates of the intratumoral color flow signal in HCCs, MLCs, and hemangiomas were 57%(105/184), 50%(22/44), and 27%(15/56), respectively. The detectability rates of intratumoral color flow signal in HCCs and in MLCs were significantly higher than the rate in hemaniomas. The detectability rates of “central color flow signal” in HCCs, MLCs, and hemangiomas were 55%(58/105), 39%(9/23), and 20%(3/15) respectively. When the tumor measured less than 5 cm, the detectability rates of “central color flow signal” in HCCs, MLCs, and hemangiomas were 51%(37/73), 21%(3/14), and 18%(2/15), respectively. The detectability of “central color flow signal” in HCCs was significantly higher than that in MLCs or in hemangiomas. We therefore concluded that evaluation of “cental color flow signal” by color Doppler flow imaging was a very useful noninvasive differential diagnosis technique for identifying HCCs, MLCs and hemangiomas.