山崎 元¹, 宮崎 知¹, 種村 匡弘¹, 森本 芳和¹, 貴島 弘樹¹, 坂本 嗣郎¹, 山崎 芳郎¹, 桑田 圭司¹, 福岡 晃子², 北田 弘美²

Hajime YAMASAKI¹, Satoru MIYAZAKI¹, Masahiro TANEMURA¹, Yoshikazu MORIMOTO¹, Hiroki KISHIMA¹, Tsuguo SAKAMOTO¹, Yoshio YAMASAKI¹, Keiji KUWATA¹, Teruko FUKUOKA², Hiromi KITADA²

¹大阪厚生年金病院外科, ²大阪厚生年金病院中央検査科

¹Department of Surgery, Osaka Koseinenkin Hospital, ²Department of Central Laboratory, Osaka Koseinenkin Hospital

キーワード : Right-sided umbilical portion of portal vein, Anomalous branching, Hepatic surgery

From Jan. 1988 to May 1990, five cases with a right-sided umbilical portion (UP) of the portal vein were found with prospective ultrasound (US) study in 2210 patients. Two out of five patients with right-sided UP had hepatic lesions. One patient had a hepatocellular carcinoma and multiple anomalies including a preduodenal portal vein, the absence of the vena cava inferior at the hepatic portion, polysplenia, intestinal malrotation, annular pancreas and a left-sided gall bladder. Another patient had an intrahepatic hematoma caused by a traffic accident. In the three patients without hepatic lesions, the right-sided UP of portal vein was found accidentally. Careful hepatic surgery was necessary to avoid injury in patients with a right-sided UP of the portal vein.