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Related Experiment Videos

Lambl's Excrescences (Valvular Strands).

Szilard Voros1, Navin C. Nanda, Abhash C. Thakur

  • 1University of Alabama at Birmingham, Heart Station SW/S102, Birmingham, AL 35233.

Echocardiography (Mount Kisco, N.Y.)
|February 15, 2001
PubMed
Summary
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Lambl's excrescences, or valvular strands, are frequently found on heart valves but lack standardized terminology. This review clarifies their features, implications, and differentiation from papillary fibroelastomas.

Area of Science:

  • Cardiology
  • Pathology
  • Medical Imaging

Background:

  • Lambl's excrescences (valvular strands) are abnormal structures found on heart valves, increasingly detected with advanced cardiac imaging.
  • There is a lack of consensus regarding the terminology and classification of these valvular structures.
  • The distinction between Lambl's excrescences and papillary fibroelastomas remains unclear in the medical literature.

Purpose of the Study:

  • To review and synthesize the existing literature on Lambl's excrescences (valvular strands).
  • To elucidate the echocardiographic, gross, and histological characteristics of these valvular structures.
  • To clarify the etiology, pathogenesis, clinical significance, and management of Lambl's excrescences.

Main Methods:

  • Comprehensive literature review of studies on Lambl's excrescences and valvular strands.

Related Experiment Videos

  • Analysis of echocardiographic descriptors, macroscopic findings, and histological features.
  • Evaluation of clinical implications, including thromboembolic events and differential diagnosis with papillary fibroelastomas.

    • Main Results:

    • Lambl's excrescences are characterized by specific echocardiographic and pathological features, aiding in their identification.
    • These valvular strands can be associated with systemic thromboembolism, highlighting their clinical relevance.
    • Distinguishing features between Lambl's excrescences and papillary fibroelastomas are outlined, though challenges remain.

    Conclusions:

    • Lambl's excrescences (valvular strands) are significant cardiac findings requiring clear characterization.
    • While implicated in thromboembolism, current management guidelines for valvular strands are not well-established.
    • Further research is needed to refine diagnostic criteria and therapeutic strategies for patients with valvular strands.