The Natural History of a Hepatic Angiosarcoma that was Difficult to Differentiate from Cavernous Hemangioma

Akihiro Okano; Hiroki Sonoyama; Yuuki Masano; Takanori Taniguchi; Masaya Ohana; Fusako Kusumi; Motoshige Nabeshima

doi:10.2169/internalmedicine.51.7994

CASE REPORTS

The Natural History of a Hepatic Angiosarcoma that was Difficult to Differentiate from Cavernous Hemangioma

Akihiro Okano, Hiroki Sonoyama, Yuuki Masano, Takanori Taniguchi, Masaya Ohana, Fusako Kusumi, Motoshige Nabeshima

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Keywords: hepatic angiosarcoma, hepatic cavernous hemangioma, differentiation, natural history, follow-up

JOURNAL OPEN ACCESS

2012 Volume 51 Issue 20 Pages 2899-2904

DOI https://doi.org/10.2169/internalmedicine.51.7994

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Abstract

A 69-year old man came to our hospital complaining of abdominal pain. Contrast-enhanced computed tomography (CT) showed a 65-mm ruptured mass in Couinaud segment 5 of the liver. The mass was treated with emergent transcatheter arterial embolization (TAE), followed by partial hepatectomy. Microscopically, the mass was determined to be an angiosarcoma. Six months previously, enhanced CT had shown a 15-mm mass diagnosed as a cavernous hemangioma in the same region of the liver. Even when the enhancement pattern of a small hepatic mass resembles that of hemangioma, the mass should be reassessed within several months to exclude a diagnosis of hepatic angiosarcoma.

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