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Updated: Feb 15, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
Published on: August 17, 2022
Novel method to save the parathyroid gland during thyroidectomy: Subcapsular saline injection
June Young Choi1,2, Hyeong Won Yu1, In Eui Bae1
1Department of Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Korea.
Subcapsular saline injection (SCASI) effectively spares the parathyroid gland during thyroidectomy. This technique significantly reduces rates of transient and permanent hypoparathyroidism following the procedure.
Area of Science:
- Endocrine Surgery
- Surgical Innovation
- Thyroid Cancer Management
Background:
- Parathyroid gland preservation during thyroidectomy is a significant surgical challenge.
- Subcapsular saline injection (SCASI) was introduced in 2015 as a novel technique to aid parathyroid gland sparing.
- The efficacy of SCASI in preventing parathyroid gland dysfunction requires thorough evaluation.
Purpose of the Study:
- To assess the effectiveness of subcapsular saline injection (SCASI) in preserving parathyroid gland function after total thyroidectomy.
- To compare the incidence of transient and permanent hypoparathyroidism between patients who underwent SCASI and those who did not.
Main Methods:
- A retrospective cohort study included patients undergoing total thyroidectomy between 2013 and 2015.
- Patients were categorized into SCASI and non-SCASI groups, with 98 patients in each.
- Serum parathyroid hormone (PTH) levels were measured postoperatively to define and compare hypoparathyroidism rates.
Main Results:
- Demographics and surgical characteristics were comparable between the SCASI and non-SCASI groups.
- The SCASI group demonstrated significantly lower rates of transient hypoparathyroidism (19.4% vs 35.7%, P < .001).
- Permanent hypoparathyroidism was significantly reduced in the SCASI group (0% vs 4.1%, P = .043).
Conclusions:
- Subcapsular saline injection (SCASI) is an effective method for preserving parathyroid gland function during thyroidectomy.
- The SCASI technique leads to a significant decrease in both transient and permanent hypoparathyroidism.
- This study supports the routine adoption of SCASI in thyroidectomy procedures to improve patient outcomes.
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