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Congenital thyroid hemiagenesis

C R McHenry1, P G Walfish, I B Rosen

  • 1Department of Surgery, Case Western Reserve University School of Medicine, MetroHealth Medical Center, Cleveland, Ohio 44109-1998, USA.

The American Surgeon
|July 1, 1995
PubMed
Summary
This summary is machine-generated.

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Thyroid hemiagenesis, a rare congenital anomaly, occurs when a thyroid lobe fails to develop. Diagnosis relies on imaging like scintigraphy and ultrasound, crucial for appropriate patient management.

Area of Science:

  • Endocrinology
  • Embryology
  • Surgical Pathology

Background:

  • Thyroid hemiagenesis is a rare congenital anomaly characterized by the failure of embryologic development of one thyroid lobe.
  • This condition can present during the evaluation of thyroid nodules, thyrotoxicosis, or goiter.

Purpose of the Study:

  • To characterize thyroid hemiagenesis by reporting the experience of seven patients.
  • To highlight diagnostic methods and clinical implications of this rare anomaly.

Main Methods:

  • Retrospective review of seven patients diagnosed with thyroid hemiagenesis.
  • Diagnostic modalities included thyroid scintigraphy and neck ultrasonography.
  • Surgical confirmation via thyroidectomy in four patients.

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Main Results:

  • Thyroid hemiagenesis involved the left lobe in five patients and the right lobe in two.
  • Diagnosis was established through scintigraphy (unilateral absence of function) and confirmed by ultrasound.
  • Associated pathologies included nodules, carcinoma, Graves' disease, and goiter.

Conclusions:

  • Thyroid hemiagenesis diagnosis should be considered with unilateral absence of function on scintigraphy, confirmed by ultrasonography.
  • Recognizing this anomaly prevents unnecessary contralateral neck exploration and ensures proper patient care.
  • Postoperative management includes thyroid hormone therapy when indicated.