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Updated: May 21, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
Published on: August 17, 2022
Parathyroid involvement in thyroid cancer: an unforeseen event
Alexandra Chrisoulidou1, Stylianos Mandanas, Periklis Mitsakis
1Department of Endocrinology & Endocrine Oncology, Theagenio Cancer Hospital, 2 Al Simeonidi street, Thessaloniki, 54007, Greece.
Parathyroid metastases from thyroid cancer are rare (0.5%), often occurring in direct contact with the primary tumor. Their clinical significance and impact on patient outcomes require further investigation.
Area of Science:
- Oncology
- Endocrinology
- Surgical Pathology
Background:
- Parathyroid metastatic disease secondary to thyroid cancer is infrequently studied.
- Parathyroid preservation is a key consideration during thyroid cancer surgery, limiting extensive research into parathyroid involvement.
- Understanding parathyroid involvement is crucial for comprehensive thyroid cancer management.
Purpose of the Study:
- To investigate the incidence and characteristics of parathyroid metastases in patients with thyroid cancer.
- To analyze the relationship between thyroid cancer and parathyroid involvement.
- To explore potential factors influencing parathyroid metastasis in thyroid cancer.
Main Methods:
- Retrospective review of 1,770 thyroid cancer patient files.
- Identification and analysis of 10 cases with parathyroid metastases.
- Recording of patient and tumor characteristics for identified cases.
Main Results:
- Parathyroid metastases were identified in 0.5% of thyroid cancer patients (10 out of 1,770).
- Papillary thyroid cancer was the most common primary type (6/10), followed by follicular (3/10) and anaplastic (1/10).
- In most cases (9/10), parathyroid infiltration was in direct contact with the thyroid tumor; one case showed non-continuous metastatic foci.
Conclusions:
- Parathyroid involvement in thyroid cancer, though uncommon, can occur irrespective of patient age or tumor size.
- The precise clinical significance and impact of parathyroid metastases on thyroid cancer prognosis are currently unclear.
- Further research is needed to elucidate the influence of parathyroid involvement on disease outcome in thyroid cancer patients.
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