Virtual neck exploration in patients with hyperparathyroidism and former cervical operations

Area of Science:

• Nuclear Medicine
• Surgical Oncology
• Endocrinology

Background:

• Accurate preoperative localization of parathyroid glands is crucial for minimally invasive surgery in primary hyperparathyroidism.
• Reoperative surgery for hyperparathyroidism demands precise localization of abnormal glands.
• Computed tomography-(99m)Tc-sestamibi (MIBI)-single photon emission computed tomography (SPECT) image fusion offers a 3D visualization of the neck with anatomical landmarks.

Purpose of the Study:

• To evaluate the superiority of CT-MIBI-SPECT image fusion over MIBI-SPECT alone for detecting abnormal parathyroid glands.
• To assess the effectiveness of CT-MIBI-SPECT image fusion in patients with a history of neck surgery.

Main Methods:

• A prospective study involving 28 patients with hyperparathyroidism and previous neck surgery.
• Preoperative localization using both CT-MIBI-SPECT image fusion and MIBI-SPECT alone.
• Comparison of the exact predicted position and intraoperative findings.

Main Results:

• CT-MIBI-SPECT image fusion predicted the exact gland position in 86% of patients (24/28), significantly higher than MIBI-SPECT alone (43%, 12/28; p < 0.004).
• CT-MIBI-SPECT image fusion successfully identified all three ectopic pathologic glands.
• MIBI-SPECT alone identified only one ectopic gland.

Conclusions:

• CT-MIBI-SPECT image fusion is demonstrably superior to MIBI-SPECT alone for preoperative localization of enlarged parathyroid glands in patients with prior neck surgery.
• This finding has implications for surgical planning and outcomes in recurrent or persistent hyperparathyroidism.