换一批
换一批摘要篇首： In 1923, Masson1 described an unusual papillary endothelial proliferation that he named as "hemangioendotheliome vegetant intravasculaire". In 1976, Clearkin and Enzinger2 coined the term intravascular papillary endothelial hyperplasia (IPEH) that is now in use. This term refers to the presence of endothelium lined papillary projections within a vascular space. Characteristically, the papillary structures are composed of a single layer of swollen or plump endothelial cells without cellular pleomorphism, mitotic activity or necrosis.
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