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Ectopic thyroid tissue at the skull base: a case report.

Keisuke Fujii1, Taro Shimono2, Hiroki Morisako3

  • 1Department of Diagnostic and Interventional Radiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-858, Japan. fksk57@yahoo.co.jp.

Neuroradiology
|May 25, 2021
PubMed
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This summary is machine-generated.

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Ectopic thyroid tissue, a rare developmental abnormality, can occur at the skull base. This case highlights multimodality imaging findings of this extremely rare location.

Area of Science:

  • Developmental biology
  • Endocrinology
  • Radiology

Background:

  • Ectopic thyroid tissue arises from abnormal embryonic thyroid germ migration.
  • Thyroid tissue normally migrates from the primitive foregut floor to the pre-tracheal position.
  • Aberrant migration can lead to thyroid tissue developing in unusual locations.

Observation:

  • A 19-year-old male presented with ectopic thyroid tissue.
  • The ectopic thyroid tissue was located at the skull base.
  • Multimodality imaging was utilized to characterize the lesion.

Findings:

  • The case details imaging characteristics of ectopic thyroid tissue at the skull base.
  • Diagnostic imaging modalities confirmed the presence and location of the aberrant thyroid tissue.
Keywords:
Ectopic thyroid glandEctopic thyroid tissueMagnetic resonance imagingSkull base

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  • The findings underscore the importance of considering rare developmental anomalies in differential diagnoses.

    • Implications:

    • This case expands the known anatomical distribution of ectopic thyroid tissue.
    • Recognition of skull base ectopic thyroid is crucial for accurate diagnosis and management.
    • Further research into the embryological mechanisms of aberrant migration may be warranted.