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  • Title: Masson's pseudotumour of the ethmoid sinus - a case report.
    Author: Hooda S, Humphreys MR, Wong SW, Evans AS.
    Journal: J Laryngol Otol; 2008 Sep; 122(9):990-2. PubMed ID: 17666137.
    Abstract:
    OBJECTIVE: We report a case of Masson's pseudotumour or intravascular papillary endothelial hyperplasia presenting in the ethmoid sinus. CASE REPORT: We present a diagnostically challenging case of Masson's pseudotumour of the ethmoid sinus presenting with persistent epistaxis and a review of the available literature. CONCLUSION: Intravascular papillary endothelial hyperplasia is a benign, reactive lesion first described by the French pathologist Pierre Masson in 1923. It can lead to diagnostic uncertainty due to its close resemblance clinically, radiologically and histopathologically to angiosarcoma.
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