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  • Title: Gastric paraganglioma: an immunohistological and ultrastructural case study.
    Author: Crosbie J, Humphreys WG, Maxwell M, Maxwell P, Cameron CH, Toner PG.
    Journal: J Submicrosc Cytol Pathol; 1990 Jul; 22(3):401-8. PubMed ID: 2390762.
    Abstract:
    This is a report of the immunohistochemical and ultrastructural features of a case of paraganglioma of the stomach in a 61-year-old woman who presented with melaena. The typical 'Zellballen' arrangement of epithelial cells with granular cytoplasm was present and the tumour was highly vascular. The polygonal epithelial cells stained strongly for neuron specific enolase and the intervening elongated sustentacular or support cells were positive for S100 protein and vimentin. Many dense core granules were present within the epithelial cells while the elongated support cells contained plentiful diffuse intermediate filaments. No hybrid cells or ganglion cells were present in the tumour. This is the sixth recorded case of gastric paraganglioma and the first to be studied in detail by immunostaining and electron microscopy.
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