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Pronunciation: he-man'je-o-per'i-si-to'ma

Definition: An uncommon vascular, usually benign, neoplasm composed of round and spindle cells that are derived from the pericytes and surround endothelium-lined vessels; malignant hemangiopericytomas are difficult to distinguish microscopically from the benign.

[hemangio- + pericyte + G. -oma, tumor]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.