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Tricuspid regurgitation due to blood cyst

Cihan Aydın1, Mesut Engin2, Selim Kul1

  • 1Department of Cardiology, Ahi Evren Thoracic and Vascular Surgery Training and Research Hospital, University of Health Sciences, Trabzon, Turkey.

Echocardiography (Mount Kisco, N.Y.)
|October 20, 2019
PubMed

Insights

Cardiac blood cysts, common in newborns, are rare in adults. These endothelial-lined, blood-filled sacs on heart valves typically resolve post-birth but may require surgical removal if complications arise.

Area of Science:

  • Cardiovascular Pathology
  • Developmental Biology

Background:

  • Cardiac blood cysts are blood-filled diverticula lined by endothelium.
  • They are frequently observed in stillbirths and newborns, typically resolving within months.
  • Their origin is hypothesized to be invaginations of atrial endothelium into atrioventricular valve stroma.

Observation:

  • The cysts predominantly originate from the left side of the heart.
  • They are commonly located on the atrioventricular valves.
  • A potential etiology involves invaginations of atrial endothelium into the valve stroma.

Findings:

  • While generally benign and self-resolving, cardiac blood cysts can lead to severe complications in rare instances.
  • Complications include embolic stroke, valvular dysfunction, and obstruction of the ventricular outflow tract.
  • Surgical intervention is indicated for symptomatic or complicated cardiac blood cysts.

Implications:

  • Understanding the developmental origin and natural history of cardiac blood cysts is crucial for accurate diagnosis.
  • Early identification and monitoring may prevent severe sequelae.
  • Surgical management provides a definitive treatment for complicated cases, improving patient outcomes.

Keywords:
blood cystintra-cardiac masstransoesophageal echocardiographytricuspid valve

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