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Anaplastic pseudothyroiditis.

Shehzad Basaria1, Robert Udelsman, Javier Tejedor-Sojo

  • 1Division of Endocrinology and Metabolism, Johns Hopkins University School of Medicine, Bayview Medical Center, 4940 Eastern Avenue, A-5-E, Suite 503, Baltimore, MD 21224, USA. sbasaria@jhmi.edu

Clinical Endocrinology
|April 23, 2002
PubMed
Summary
This summary is machine-generated.

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Anaplastic thyroid carcinoma can rarely cause thyrotoxicosis. This aggressive cancer led to thyroid destruction, mimicking thyroiditis, a condition we term "anaplastic pseudothyroiditis".

Area of Science:

  • Endocrinology
  • Oncology
  • Pathology

Background:

  • Anaplastic thyroid carcinoma (ATC) is a highly aggressive malignancy.
  • ATC typically presents with a rapidly enlarging neck mass causing local symptoms.
  • Thyrotoxicosis is an exceptionally rare initial presentation of ATC.

Observation:

  • A patient with ATC developed severe thyrotoxicosis, managed with beta-blockers.
  • The patient subsequently became hypothyroid during hospitalization.
  • Histopathology revealed tumor invasion destroying normal thyroid follicles.

Findings:

  • ATC can manifest with thyrotoxicosis due to follicular destruction.
  • The clinical and pathological picture resembles various thyroiditis conditions.
  • A novel term, "anaplastic pseudothyroiditis," is proposed for this presentation.

Related Experiment Videos

Implications:

  • Recognizing "anaplastic pseudothyroiditis" is crucial for timely ATC diagnosis.
  • This rare presentation highlights the diverse clinical manifestations of ATC.
  • Understanding this phenomenon aids in differentiating ATC from inflammatory thyroid diseases.