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Related Concept Videos

The Thyroid Gland01:23

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Related Experiment Video

Updated: Nov 21, 2025

Spontaneous Murine Model of Anaplastic Thyroid Cancer
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Gynecological malignancy mimicking a thyroid lymph node metastasis.

Simone Pederzoli1,2, Giorgia Spaggiari1, Giuditta Bernardelli3

  • 1Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero-Universitaria of Modena, Modena, Italy.

Endocrinology, Diabetes & Metabolism Case Reports
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Summary
This summary is machine-generated.

A patient initially suspected of thyroid cancer metastasis to the neck lymph nodes was ultimately diagnosed with recurrent gynecological cancer. This case highlights the importance of thorough patient history and diagnostic evaluation in oncology.

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Area of Science:

  • Oncology
  • Endocrinology
  • Pathology

Background:

  • Cervical lymph node metastasis can originate from distant primary sites.
  • Distinguishing between primary thyroid cancer and metastatic disease in the neck can be challenging.
  • Immunohistochemistry is crucial but can sometimes be misleading.

Purpose of the Study:

  • To present a case of misdiagnosed cervical lymph node metastasis.
  • To emphasize the importance of integrating patient history with diagnostic findings.
  • To illustrate the potential pitfalls in oncological diagnosis.

Main Methods:

  • Ultrasonography and fine-needle aspiration cytology of a suspicious cervical lymph node.
  • Histological examination and immunohistochemistry (TTF-1, PAX-8, Thyroglobulin) of neck dissection specimens.
  • Total thyroidectomy and subsequent histological review of thyroid tissue.

Main Results:

  • Initial cytology suggested adenocarcinoma with papillary architecture, leading to suspicion of thyroid origin.
  • Histology confirmed papillary carcinoma metastasis, but immunohistochemistry was focally positive for TTF-1 and PAX-8, negative for thyroglobulin.
  • Histological revision of surgical specimens ultimately suggested recurrence of gynecological cancer, not thyroid carcinoma.

Conclusions:

  • Careful evaluation of cytological, histological, and immunohistochemical results is essential in oncological management.
  • A multidisciplinary approach and consideration of the patient's complete medical history are mandatory.
  • Misinterpretation of diagnostic markers can lead to unnecessary treatments.