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Intravascular Papillary Endothelial Hyperplasia (IPEH) or Masson’s tumor are non-specific vascular lesions which enclose reactive proliferation of endothelial cells that arise in an organizing thrombus. These tumors are an extremely rare intracranial entity, with few cases in the literature reported.
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Uri Pinchas Hadelsberg (2018) studied this question.
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