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Everything you need to know about Computed Tomography (CT) & CT Scanning


Question 10: 15 year old male with increasing symptoms of shortness of breath. What is the most likely diagnosis?


Diagnosis: Cor Triatriatum

Cor Triatriatum: Facts

  • Anomaly where the left atrium separated by a membrane or a fibromuscular band
  • In pediatric patients associated with major congenital lesions including Tetrology of Fallot, double outlet right ventricle or coarctation
  • Usually involves left atrium although occasionally may involve the right atrium
  • 0.1-0.4% of all infants with cardiac disease
  • Most patients present in infancy but others may present in childhood or early adulthood

Cor Triatriatum: Clinical Presentation

  • Asymptomatic
    • Heart murmur
    • Incidental finding on imaging study
  • Symptomatic
    • Exertional dyspnea
    • Hemoptysis
    • Atrial fibrillation (palpitations)
    • Systemic thromboembolism
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© 1999-2020 Elliot K. Fishman, MD, FACR. All rights reserved.