Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery

Abstract Background The importance of parathyroid gland preservation in thyroid surgery has been well recognized; however, the rapid identification of the parathyroid gland, particularly the inferior parathyroid gland (IPG), remains challenging. This study aimed to evaluate the effectiveness of retr...

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Main Authors: Shouyi Yan, Yuhan Chen, Wenxin Zhao, Liyong Zhang, Shaojun Cai
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Endocrine Disorders
Subjects:
Online Access:https://doi.org/10.1186/s12902-025-01838-y
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author Shouyi Yan
Yuhan Chen
Wenxin Zhao
Liyong Zhang
Shaojun Cai
author_facet Shouyi Yan
Yuhan Chen
Wenxin Zhao
Liyong Zhang
Shaojun Cai
author_sort Shouyi Yan
collection DOAJ
description Abstract Background The importance of parathyroid gland preservation in thyroid surgery has been well recognized; however, the rapid identification of the parathyroid gland, particularly the inferior parathyroid gland (IPG), remains challenging. This study aimed to evaluate the effectiveness of retrograde inferior parathyroid protection technique (RIPPT) based on thymus preservation. Methods A total of 236 patients were enrolled in this study between August 2019 and December 2020. RIPPT was employed to identify and protect the inferior parathyroid gland (IPG), and its identification rate and the anatomical variations were analyzed. The parathyroid hormone (PTH) and serum calcium levels were compared between patients who underwent IPG orthotopic retention and those who received IPG auto-transplantation, stratified by the anatomical type of the IPG. Results In total, the IPG identification rate was 97.88% (231/236), and the auto-transplantation rate was 74.46% (172/231). The anatomical relationship between IPG and thymus was observed in 77.97% of patients (184/236). Additionally, PTH levels were higher in patients with IPG orthotopic retention compared to those with IPG auto-transplantation both on postoperative day 1 (POD1) and at 6 months. PTH levels were also higher in patients with superior parathyroid gland (SPG) and IPG orthotopic retention compared to those who underwent both auto-transplantation procedures. Conclusion Retrograde inferior parathyroid protection technique (RIPPT) underscores the importance of protecting inferior parathyroid gland (IPG) in thyroid surgery and has been demonstrated to be effective in the rapid identification and functional preservation of IPG, based on short-term outcomes. Clinical trial number Not applicable.
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spelling doaj-art-fd8dcdeceb034119aeae9dc286c4b9322025-01-26T12:37:33ZengBMCBMC Endocrine Disorders1472-68232025-01-0125111110.1186/s12902-025-01838-yClinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgeryShouyi Yan0Yuhan Chen1Wenxin Zhao2Liyong Zhang3Shaojun Cai4The Department of Thyroid Surgery, Fujian Medical University Union HospitalThe Department of Thyroid Surgery, Fujian Medical University Union HospitalThe Department of Thyroid Surgery, Fujian Medical University Union HospitalThe Department of Thyroid Surgery, Fujian Medical University Union HospitalThe Department of Thyroid Surgery, Fujian Medical University Union HospitalAbstract Background The importance of parathyroid gland preservation in thyroid surgery has been well recognized; however, the rapid identification of the parathyroid gland, particularly the inferior parathyroid gland (IPG), remains challenging. This study aimed to evaluate the effectiveness of retrograde inferior parathyroid protection technique (RIPPT) based on thymus preservation. Methods A total of 236 patients were enrolled in this study between August 2019 and December 2020. RIPPT was employed to identify and protect the inferior parathyroid gland (IPG), and its identification rate and the anatomical variations were analyzed. The parathyroid hormone (PTH) and serum calcium levels were compared between patients who underwent IPG orthotopic retention and those who received IPG auto-transplantation, stratified by the anatomical type of the IPG. Results In total, the IPG identification rate was 97.88% (231/236), and the auto-transplantation rate was 74.46% (172/231). The anatomical relationship between IPG and thymus was observed in 77.97% of patients (184/236). Additionally, PTH levels were higher in patients with IPG orthotopic retention compared to those with IPG auto-transplantation both on postoperative day 1 (POD1) and at 6 months. PTH levels were also higher in patients with superior parathyroid gland (SPG) and IPG orthotopic retention compared to those who underwent both auto-transplantation procedures. Conclusion Retrograde inferior parathyroid protection technique (RIPPT) underscores the importance of protecting inferior parathyroid gland (IPG) in thyroid surgery and has been demonstrated to be effective in the rapid identification and functional preservation of IPG, based on short-term outcomes. Clinical trial number Not applicable.https://doi.org/10.1186/s12902-025-01838-yInferior parathyroid glandPapillary thyroid cancerThymus-related inferior parathyroid glandThyroid surgeryRetrograde inferior parathyroid protection techniqueThymus preservation
spellingShingle Shouyi Yan
Yuhan Chen
Wenxin Zhao
Liyong Zhang
Shaojun Cai
Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
BMC Endocrine Disorders
Inferior parathyroid gland
Papillary thyroid cancer
Thymus-related inferior parathyroid gland
Thyroid surgery
Retrograde inferior parathyroid protection technique
Thymus preservation
title Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
title_full Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
title_fullStr Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
title_full_unstemmed Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
title_short Clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
title_sort clinical significance of retrograde inferior parathyroid protection technique based on thymus preservation in thyroid surgery
topic Inferior parathyroid gland
Papillary thyroid cancer
Thymus-related inferior parathyroid gland
Thyroid surgery
Retrograde inferior parathyroid protection technique
Thymus preservation
url https://doi.org/10.1186/s12902-025-01838-y
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