Grossly, a lot of soft white nodules, 0.5～1.5 cm in diameter, were randomly scattered in liver of a slaughtered Korean Native Cattle. The surface of liver was roughened by those nodules. Histopathologically the nodules were consisted of numerous mature blood vessels, which had variable size and wall thickness, and which were encircled by much connective tissue. Masson's trichrome stain clearly revealed the proliferated blood vessels and perivascular stroma and, immunohistochemical staining revealed that endothelial cells of proliferated blood vessels were positive for Von Willebrand Factor. Based on gross and histopathological lesions, and immunohistochemical staining, the case was confirmed as hepatic vascular hamartoma and it is the first case report in Korea, as far as we know.

• 배유찬(국립수의과학검역원) | You-Chan Bae (National Veterinary Research and Quarantine Service) Correspondence
• 김하영(국립수의과학검역원) | Ha-Young Kim (National Veterinary Research and Quarantine Service)
• 우계형(국립수의과학검역원) | Gye-Hyeong Woo (National Veterinary Research and Quarantine Service)
• 박중원(국립수의과학검역원) | Jung-Won Park (National Veterinary Research and Quarantine Service)
• 윤순식(국립수의과학검역원) | Soon-Seek Yoon (National Veterinary Research and Quarantine Service)
• 심애란(울산광역시 보건환경연구원) | Ae-Ran Sim (Ulsan Institute of Health and Environment)
• 엄재구(국립수의과학검역원) | Jae-Ku Oem (National Veterinary Research and Quarantine Service)
• 김혜령(국립수의과학검역원) | Hye-Ryoung Kim (National Veterinary Research and Quarantine Service)
• 주이석(국립수의과학검역원) | Yi-Seok Joo (National Veterinary Research and Quarantine Service)
• 이오수(국립수의과학검역원) | O-Soo Lee (National Veterinary Research and Quarantine Service)