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Lymphatic obstruction in carcinomatous ascites.

G B Feldman

    Cancer Research
    |February 1, 1975
    PubMed
    Summary

    Inflammation obstructing lymphatic drainage causes ovarian cancer ascites in mice. Corticosteroids can inhibit this process, slowing fluid buildup and tumor spread.

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    Lymphatic drainage of the peritoneal cavity and its significance in ovarian cancer.

    American journal of obstetrics and gynecology·1974

    Area of Science:

    • Oncology
    • Pathophysiology
    • Immunology

    Background:

    • Transplantable ovarian carcinoma in C3H mice induces significant ascitic fluid accumulation.
    • Understanding the mechanisms of carcinomatous ascites is crucial for developing therapeutic strategies.

    Purpose of the Study:

    • To investigate the key factors contributing to carcinomatous ascites formation in a murine ovarian cancer model.
    • To evaluate the efficacy of corticosteroid therapy in managing ascites.

    Main Methods:

    • Intraperitoneal inoculation of ovarian carcinoma cells in C3H mice.
    • Histological examination of peritoneal tissues and lymphatic structures.
    • Pharmacotherapeutic intervention using high-dose systemic corticosteroids, anticoagulants (heparin, sodium warfarin).

    Main Results:

    • Ascites formation is primarily driven by inflammation-induced obstruction of peritoneal lymphatic drainage.
    • High-dose systemic corticosteroids significantly retard ascitic fluid accumulation by inhibiting inflammation.
    • Tumor cell invasion into lymphatic capillaries occurs late, only during massive fluid accumulation.
    • Anticoagulation did not affect tumor cell lymphatic lodgment or ascites progression.

    Conclusions:

    • Inflammatory obstruction of lymphatic drainage is a critical determinant of carcinomatous ascites in this model.
    • Corticosteroid therapy shows potential in mitigating ascites progression.
    • Excessive fluid production is unlikely to be the primary cause of ascites in this murine model.

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