A Primary Duodenal Angiosarcoma with Lung and Bone Metastases: A Case Report and Literature Review

201 Copyrightc 2015 The Korean Association of Internal Medicine This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Received: 2014. 6. 13 Revised: 2014. 12. 15 Accepted: 2015. 4. 13