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  • Title: [Papillary and cystic tumor of the pancreas. Histological, immunohistochemical and flow cytometric study].
    Author: Petrella T, Rat P, Lizard G, Dusserre-Guion L, Poulard G, Michiels R.
    Journal: Gastroenterol Clin Biol; 1994; 18(11):1021-7. PubMed ID: 7705561.
    Abstract:
    The authors are reporting a case of papillary and cystic neoplasm of the pancreas. This rare malignant epithelial neoplasm occurs mostly in young women and has a more favorable prognosis than the adenocarcinoma. Radiologic investigations showed a well demarcated, heterogeneous, hypovascular mass. The histological study showed the proliferation of epithelial cells in a papillary pattern. The immunochemistry was negative for markers of adenocarcinoma but positive for vimentin, alpha-1-antitrypsin, alpha-1-antichymotrypsin and neuron specific enolase. Receptors of progesterone were also detected. By flow cytometric analysis, the tumours was hypoploid. The histogenesis of these tumours remained controversed. Ultrastructural details of the neoplastic cells suggest that these tumours originate from small duct cells; detection in several cases of markers for endocrine neoplasm suggests that they originate from primitive multipotential cells, that may show exocrine or endocrine differentiation.
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