Amianthoid


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Am`i`an´thoid


a.1.Resembling amianthus.
References in periodicals archive ?
(1,3,12,20) In a study of 115 DLs, Henricks et al (12) described low-grade tumors resembling desmoid-type fibromatosis as well as a tumor with myofibroblastic cells admixed with amianthoid fibers reminiscent of a myofibroblastoma.
Intranodal palisaded myofibroblastoma (IPM), also known as "intranodal hemorrhagic spindle cell tumor with amianthoid fibers," is a benign mesenchymal tumor of the lymph node originating from smooth muscle cells and myofibroblasts often with the presence of amianthoid fibers [1, 2].
Palisaded myofibroblastoma of lymph node contains delicate palisading spindle cells and thick bands of collagen fibers ("amianthoid fibers") and is desmin negative, while inflammatory pseudotumor of lymph node lacks the pseudovascular spaces.
Five microscopic features are seen: (a) compressed remnants of lymphoid tissue at the periphery; (b) spindle cells with nuclear palisading; (c) intraparenchymal hemorrhage and erythrocyte extravasation; (d) so-called amianthoid fibers; and (e) intracellular and extracellular fuchsinophilic bodies that stain positive for smooth muscle actin.