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Updated: Sep 8, 2025

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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
Published on: August 17, 2022
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Preoperative inflammatory markers for predicting parathyroid carcinoma
Keiko Ohkuwa1, Kiminori Sugino1, Ryohei Katoh2
1Department of Surgery, Ito Hospital, Tokyo, Japan.
Endocrine Connections
|June 14, 2022
Summary
Preoperative inflammatory markers can help predict parathyroid carcinoma. A decreased lymphocyte-to-monocyte ratio (LMR) and larger tumor size significantly indicate cancer risk.
Area of Science:
- Endocrinology
- Oncology
- Surgical Pathology
Background:
- Parathyroid carcinoma is a rare but aggressive endocrine malignancy.
- Diagnosis is often delayed due to reliance on postoperative histopathology.
- Preoperative diagnostic tools are crucial for timely intervention.
Purpose of the Study:
- To investigate the utility of preoperative inflammatory markers in predicting parathyroid carcinoma.
- To identify potential predictors for differentiating parathyroid carcinoma from parathyroid adenoma.
- To assess the role of lymphocyte-to-monocyte ratio (LMR) and tumor size in preoperative diagnosis.
Main Methods:
- Retrospective analysis of 36 parathyroid carcinoma and 50 parathyroid adenoma cases.
- Comparison of preoperative clinical characteristics and inflammatory markers, including LMR.
- Multivariate analysis and receiver operating characteristic (ROC) analysis to identify independent predictors.
Main Results:
- Parathyroid carcinoma cases showed significantly higher intact-parathyroid hormone, serum calcium, and tumor diameter.
- A significant decrease in LMR was observed in parathyroid carcinoma.
- LMR (cutoff ≤ 4.85) and tumor diameter (cutoff ≥ 28.0 mm) were independent predictors of parathyroid cancer.
Conclusions:
- Preoperative LMR and tumor diameter are valuable indicators for predicting parathyroid carcinoma.
- Combining LMR and tumor diameter enhances the accuracy of preoperative cancer prediction.
- These findings may aid in improving the preoperative diagnosis of parathyroid malignancies.
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