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Multiple paraganglioneuromas.

K Kawaguchi, T Takizawa, M Koike

    Virchows Archiv. A, Pathological Anatomy and Histopathology
    |January 1, 1985
    PubMed
    Summary
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    Multiple paraganglioneuromas were found in a 40-year-old man, with tumors in the duodenum and pancreas. Histology revealed a mixed cell population, suggesting a neural crest origin.

    Area of Science:

    • Gastroenterology
    • Surgical Pathology
    • Oncology

    Background:

    • Paragangliomas are rare neuroendocrine tumors. Multiple paraganglioneuromas, particularly in the duodenum, are exceptionally uncommon.
    • Previous reports indicate a predilection for the second portion of the duodenum in similar histological cases.

    Observation:

    • A 40-year-old male presented with three masses: one periampullary duodenal polypoid mass and two well-defined peripancreatic masses near large vessels.
    • Histopathological examination revealed two distinct cell types: epithelioid cells (NSE positive) and spindle-shaped cells (S-100 positive).

    Findings:

    • Electron microscopy identified three epithelioid cell subtypes: ganglion cell precursors, paraganglion cell precursors, and hybrid forms.
    • The tumor exhibited histopathology consistent with ganglioneuroma, paraganglioma, and mixed features, indicating a potential origin from undifferentiated neural crest cells.

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    Implications:

    • This case expands the understanding of paraganglioneuroma presentation and histology.
    • The findings support the hypothesis that paraganglioneuromas can arise from multipotent neural crest cells with organoid differentiation potential.