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Ectopic thyroid tissue in the left ventricular outflow tract.

D Baykut1, U Fiegen, A Krian

  • 1Clinic of Thoracic and Cardiovascular Surgery, Heart Center, Duisburg, Germany.

The Annals of Thoracic Surgery
|March 29, 2000
PubMed
Summary
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Ectopic thyroid tissue in the heart (struma cordis) is rare. This case report details successful surgical removal of a cardiac tumor causing left ventricular outflow tract obstruction, confirming it as thyroid tissue.

Area of Science:

  • Cardiology
  • Endocrinology
  • Pathology

Background:

  • Ectopic thyroid tissue in the heart, known as struma cordis, is an exceedingly rare condition.
  • Hemodynamically significant obstruction of the left ventricular outflow tract (LVOT) by struma cordis is exceptionally uncommon, with only one prior report in 1988.

Observation:

  • A 42-year-old woman presented with recurrent chest pain.
  • Transthoracal echocardiography revealed two spherical cardiac tumors.
  • One tumor was identified as obstructing the left ventricular outflow tract (LVOT).

Findings:

  • Surgical resection of the LVOT-obstructing tumor was performed successfully under cardiopulmonary bypass.
  • Pathologic examination confirmed the resected tumor to be a colloid-filled ectopic thyroid gland.

Related Experiment Videos

  • A second, non-obstructing tumor in the interventricular septum was left in situ due to its location and lack of hemodynamic impact.

    • Implications:

    • This case highlights a rare cause of LVOT obstruction and demonstrates a successful surgical approach.
    • Management of cardiac tumors requires careful consideration of hemodynamic significance and anatomical location.
    • Long-term follow-up is essential to monitor for recurrence of ectopic thyroid tissue in the heart.