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Related Experiment Videos

Hyperfunctioning malignant thyroid nodule in an 11-year-old girl: pathologic and molecular studies.

H Mircescu1, J Parma, C Huot

  • 1Sainte-Justine Hospital, University of Montreal, Quebec, Canada.

The Journal of Pediatrics
|October 18, 2000
PubMed
Summary

A rare thyroid cancer was found in an 11-year-old girl with a hyperfunctioning thyroid nodule. This nodule contained a TSHR mutation, linking it to thyroid neoplasia.

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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Oncology

Background:

  • Thyroid nodules are common, but malignancy in children is rare.
  • Hyperfunctioning thyroid nodules are typically benign.
  • Activating mutations in the TSHR gene can cause hyperthyroidism.

Observation:

  • An 11-year-old girl presented with a hyperfunctioning thyroid nodule.
  • Papillary thyroid carcinoma was diagnosed in the nodule.
  • Genetic analysis revealed a specific TSHR mutation (met453thr) in the nodule.

Findings:

  • The identified met453thr mutation in the Thyroid Stimulating Hormone Receptor (TSHR) was present exclusively in the cancerous thyroid nodule.
  • This activating mutation was absent in the patient's normal thyroid tissue and leukocytes.

Related Experiment Videos

  • This genetic finding directly links the TSHR mutation to the development of thyroid neoplasia.

    • Implications:

    • This case provides evidence that activating TSHR mutations can drive thyroid cancer development, even in pediatric patients.
    • Understanding the role of TSHR mutations in thyroid neoplasia may lead to novel diagnostic or therapeutic strategies.
    • Highlights the importance of genetic profiling in pediatric thyroid nodules, particularly those that are hyperfunctioning.