Hepatocellular Carcinoma of an Extrahepatic Type Originated from the Riedel's Lobe

Naoki Tomizawa*, Teruo Kusaba, Susumu Ohwada, Yoshiyuki Sakata, Yuichi Iino, Yasuo Morishita

The Department of Surgery, Takasaki National Hospital
*The Second Department of Surgery, Gunma University School of Medicine

About 70 patients with extrahepatic hepatocellular carcinoma (HCC) including three HCCs originating from the Riedel's lobe have been reported in Japan. We report herein a 57-year-old woman with HCC originating from the Riedel's lobe. She admitted for the right hypochondrial tumor. Ultrasonograms and computed tomograms showed a tumor growing from the posterior-inferior segment of the liver to extrahepatic areas. Celiac arteriograms showed a hypervascular tumor fed by two abnormal arteries from the right hepatic artery. Partial resection of the liver was performed. The tumor was a single nodular type with a capsule that was separatd from normal liver tissue. Histologically, the tumor was Edmondson II type of hepatocellular carcinoma.

Key words
hepatocellular carcinoma, extrahepatic growth, Riedel's lobe

Reprint requests
Naoki Tomizawa Second Department of Surgery, Gunma University School of Medicine
3-39-22 Shouwamachi, Maebashi, 371 JAPAN

Accepted
December 7, 1994

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