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Related Experiment Videos

Primary systemic amyloidosis with a retroperitoneal mass.

S Idell, M Meltzer, E Knafelc

    Clinical and Experimental Rheumatology
    |April 1, 1984
    PubMed
    Summary

    Primary systemic amyloidosis, a rare condition, can manifest as a large retroperitoneal mass. This case highlights a unique presentation of amyloidosis causing congestive heart failure and ascites.

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    Area of Science:

    • Nephrology
    • Oncology
    • Pathology

    Background:

    • Primary systemic amyloidosis is a rare plasma cell disorder.
    • It typically involves deposition of immunoglobulin light chains in organs.
    • Retroperitoneal mass formation is an uncommon manifestation.

    Observation:

    • A 73-year-old woman presented with congestive heart failure, abdominal distension, and ascites.
    • Ultrasonography revealed a large retroperitoneal mass.
    • Autopsy confirmed the mass composed of amyloid with characteristic Congo red staining.

    Findings:

    • The amyloid staining showed resistance to permanganate treatment.
    • No evidence of malignancy or inflammatory disease was found at autopsy.
    • This presentation suggests primary systemic amyloidosis as the cause.

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    Implications:

    • This case represents the first reported instance of primary systemic amyloidosis presenting as a retroperitoneal mass.
    • It expands the spectrum of clinical manifestations for this rare disease.
    • Highlights the importance of considering amyloidosis in unexplained retroperitoneal masses.