Mild hypercalcitoninaemia and sporadic thyroid disease

Area of Science:

• Endocrinology
• Oncology
• Surgical Pathology

Background:

• Mild hypercalcitoninaemia (MHCT) in sporadic thyroid disease presents a diagnostic challenge, balancing the risk of undertreating medullary thyroid cancer against overtreating benign conditions.
• Systematic surgical intervention for all MHCT cases may lead to unnecessary procedures for non-malignant thyroid pathologies.

Purpose of the Study:

• To review the management strategies for patients with mild hypercalcitoninaemia and sporadic thyroid disease.
• To evaluate the outcomes of surgical versus non-surgical approaches in this patient cohort.

Main Methods:

• Defined MHCT by basal and stimulated calcitonin levels (≤30 and ≤200 pg/ml, respectively).
• Retrospectively analyzed 125 patients over 15 years with MHCT and sporadic thyroid disease.
• Indicated surgery based on local pressure symptoms or suspicious nodule histomorphology.

Main Results:

• Six patients (4.8%) were diagnosed with medullary microcarcinoma following thyroidectomy.
• 54 patients (74%) had C-cell hyperplasia, and 13 (18%) had no C-cell pathology.
• Calcitonin levels normalized post-thyroidectomy, stabilized post-lobectomy, and normalized in one-third of non-surgically treated patients.

Conclusions:

• Not all patients diagnosed with mild hypercalcitoninaemia and sporadic thyroid disease necessitate surgical intervention.
• Selective surgical management based on clinical and histopathological findings is appropriate for MHCT.
• Conservative management can be effective for a significant portion of patients with MHCT.