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The Korean Journal of Pathology 1992;26(6): 601-604.
Epithelioid Hemangioendothelioma of the Left Middle Finger: A case report.
Mi Kyung Kim, Yong Wook Park, Kye Yong Song
Department of Pathology, College of Medicine, Chung Ang University, Seoul, Korea.
ABSTRACT
Epithelioid hemangioendothelioma is a recently described vascular neoplasm characterized by epitheloiod endothelial linings and its borderline biologic behavior. We report a case of epithelioid hemangioendothelioma in a 6-year-old male. The tumor was presented as a non-tender dermal nodule on the left middle finger. The microscopic sections revealed irregular proliferation of vascular channels lined by epithelioid cells with histiocytoid features and frequent intracytoplasmic vacuoles, mimicking so called signet ring cells. Immunohistochemical stainings for factor VIII and vimentin were positive both in epithelioid and vacuolated endothelial cell. Electron microscopic finding reveals abundant intermediate filaments.
Key Words: Epithelioid hemangioendothelioma; Vascular tumors; Finger