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Atypical gastric carcinoids

E C Sweeney, L M McDonnell

    Histopathology
    |March 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    This study documents four gastric tumors resembling carcinoid or oat-cell carcinoma. Findings confirmed these as atypical carcinoids, suggesting a spectrum of gastric endocrine neoplasia.

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    Area of Science:

    • Gastroenterology
    • Oncology
    • Pathology

    Background:

    • Gastric tumors can present with varied microscopic features.
    • Distinguishing between different types of neuroendocrine tumors is crucial for patient outcomes.

    Purpose of the Study:

    • To document and characterize infiltrating gastric tumors with light microscopic features suggestive of carcinoid or oat-cell carcinoma.
    • To investigate the histological and ultrastructural findings of these tumors.
    • To postulate a spectrum of endocrine cell neoplasia in the stomach.

    Main Methods:

    • Documentation of four infiltrating gastric tumor cases.
    • Light microscopy for initial assessment.
    • Histological and ultrastructural analysis for definitive diagnosis.

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    Main Results:

    • Four gastric tumors exhibited features suggestive of carcinoid or oat-cell carcinoma.
    • Histological and ultrastructural examination confirmed these tumors as atypical carcinoids.
    • A spectrum of endocrine cell neoplasia in the stomach is proposed, analogous to bronchial findings.

    Conclusions:

    • The documented cases represent atypical carcinoids of the stomach.
    • A spectrum of gastric endocrine cell neoplasia, similar to that in the bronchus, is postulated.
    • Increased recognition of poorly differentiated gastric endocrine tumors is important for prognosis and therapy.