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Updated: Aug 18, 2025

Spontaneous Murine Model of Anaplastic Thyroid Cancer

Spontaneous Murine Model of Anaplastic Thyroid Cancer

Published on: February 3, 2023

Mediastinal Parathyroid Cancer.

Klaus-Martin Schulte^1,2, Gabriele Galatá², Nadia Talat²

¹Academic Department of Surgery, School of Medicine and Psychology, College of Health and Medicine, Australian National University, Canberra, ACT 2601, Australia.

|December 11, 2022

Summary

This summary is machine-generated.

Pre-operative recognition of mediastinal parathyroid cancer (MPC) is crucial. A "3 + 3" rule (lesion size >3cm and corrected calcium ≥3.0 mM) helps identify malignancy, guiding oncological surgical approaches.

Keywords:

ectopic parathyroid mediastinum oncological surgery parathyroid adenoma parathyroid carcinoma prediction primary hyperparathyroidism surgery

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Area of Science:

Endocrinology
Surgical Oncology
Pathology

Background:

Parathyroid cancer (PC) is rare, necessitating pre-operative identification for optimal surgical planning and oncological outcomes.
Mediastinal parathyroid neoplasms (MPNs) present diagnostic challenges, requiring differentiation between benign adenomas and malignant cancers.

Purpose of the Study:

To characterize mediastinal parathyroid cancer (MPC) features.
To identify criteria aiding in the pre-operative recognition of malignancy in MPNs.
To evaluate the utility of a novel '3 + 3' criterion for predicting MPC.

Main Methods:

Systematic literature review (1968–2020) of 467 patients with MPNs.
Inclusion of an additional 35 patients from an independent cohort, totaling 502 MPNs.
Analysis of clinical, biochemical, and pathological data, including lesion size and corrected calcium levels.

Main Results:

Mediastinal parathyroid cancer (MPC) was identified in 6.4% (32/502) of MPNs.
MPCs were significantly larger (54 ± 36 mm) than mediastinal parathyroid adenomas (MPAs; 22 ± 15 mm) and cervical PCs (35 ± 18 mm).
The '3 + 3' criterion (lesion size >3 cm and corrected calcium ≥3.0 mM) identified 74% of MPCs with 83% accuracy; lesions <3 cm and calcium <3.0 mM were never malignant.

Conclusions:

The '3 + 3' rule provides a simple, effective method for pre-operative suspicion of MPC.
Implementing this rule can facilitate early oncological team involvement for suspected mediastinal parathyroid cancer.
Accurate pre-operative diagnosis of MPC is vital for appropriate surgical access and achieving oncological clearance.