松橋 孝明, 山田 伸夫, 新沢 陽英, 土田 秀也, 牧野 直彦, 久保木 真, 石橋 正道, 高橋 恒男

Takaaki MATSUHASHI, Nobuo YAMADA, Haruhide SHINZAWA, Hideya TSUCHIDA, Naohiko MAKINO, Makoto KUBOKI, Masamichi ISHIBASHI, Tuneo TAKAHASHI

山形大学第2内科

The second Department of Internal Medicine, Yamagata University

キーワード : Aspiration biopsy, Liver tumor, Biopsy needle, Y-needle

We designed a spinal-type, ultrasound-guided, aspiration biopsy needle called the Y-needle to histologically diagnose hepatic tumors. We recently assessed the usefulness of this needle by comparing it to a Majima needle. The subjects of this study were 39 patients with hepatic tumors who underwent ultrasound guided aspiration biopsy using either the Y-needle or the Majima needle. Prior to the biopsy, these patients had been suspected of having the following diseases: 26 cases of hepatic hemangioma, 10 cases of hepatocellular carcinoma, one case of adenomatous hyperplasia, one case of cholangiocellular carcinoma and one case of hepatic angiomyolipoma. A biopsy using the Majima needle did not allow for a histological diagnosis of the hepatic hemangioma, although such a diagnosis was possible in 8 of the 17 cases of hepatic hemangioma biopsied using the Y-needle. The Y-needle also seemed to make possible histological diagnosis of hepatocellular carcinoma. Moreover, in some cases involving other hepatic tumors, the Y-needle also seemed to be useful. These results indicate the usefulness of Y-needle in the ultrasound-guided, aspiration biopsy of hepatic tumors.