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Chen C, Wang X, Liu G, Huang Y. Impact of Intraoperative Nanocarbon Staining and parathyroid autotransplantation on parathyroid injury and recovery in adult thyroidectomy: a retrospective cohort study. BMC Surg 2024; 24:379. [PMID: 39614226 DOI: 10.1186/s12893-024-02679-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Accepted: 11/18/2024] [Indexed: 12/01/2024] Open
Abstract
BACKGROUND Thyroid surgeries are intricate operations that carry the risk of damaging the parathyroid glands, which can result in hypocalcemia and potential long-term hypoparathyroidism. Innovative surgical techniques including Intraoperative Nanocarbon Staining (INS), aim to enhance the preservation of parathyroid glands. This study assesses the effectiveness of INS combined with parathyroid autotransplantation in reducing postoperative complications and preserving parathyroid function. METHODS This retrospective cohort study assessed patients aged ≥ 18 who underwent thyroid surgery at a tertiary care hospital from January 2017 to December 2022. We compared the incidence of postoperative parathyroid injury, recovery rates of parathyroid function, and the incidence of permanent hypoparathyroidism between groups. Data on patient demographics, diagnosis, surgical details, parathyroid hormone levels, and calcium levels were collected and analyzed using chi-square tests, t-tests, and logistic regression. RESULTS The study included 198 patients, with 101 in the intervention group and 97 in the control group. Baseline characteristics such as sex ratio, age, BMI, and preoperative calcium levels showed no significant differences between groups. The intervention group demonstrated a significantly shorter duration of intravenous calcium supplementation (median 2 vs. 3 days, p < 0.001) and higher calcium nadir levels (median 8.36 vs. 7.85 mg/dL, p < 0.001) compared to controls. Furthermore, the incidence of postoperative parathyroid injury and permanent hypoparathyroidism was lower in the intervention group (15.84% vs. 20.62%, p = 0.045 and 4.95% vs. 15.46%, p = 0.003, respectively). Multivariate analysis revealed factors such as Blood iPTH monitoring level (OR 1.053, 95% CI 1.009-1.099, P = 0.018) and surgery type (Near Total Thyroidectomy) (OR 0.447, 95% CI 0.202-0.990, P = 0.047) were positively associated with surgical success. The intervention group also showed higher surgery success rates (OR 2.054, 95% CI 1.017-4.150, P = 0.045). CONCLUSION The application of INS and parathyroid autotransplantation during thyroidectomy significantly improves postoperative parathyroid gland function, reducing the incidence of permanent hypoparathyroidism. These findings support the incorporation of these techniques into standard surgical practice for thyroidectomy.
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Chen W, Zhou G. Analysis of the efficacy of different amounts of parathyroid grafts in the treatment of secondary hyperparathyroidism. BMC Endocr Disord 2024; 24:242. [PMID: 39533308 PMCID: PMC11555849 DOI: 10.1186/s12902-024-01777-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Accepted: 11/04/2024] [Indexed: 11/16/2024] Open
Abstract
PURPOSE This study compares the efficacy of two different ranges of parathyroid transplantation weights with the aim of determining a preferable range for transplantation weight. METHODS From May 2018 to June 2023, 79 patients underwent total parathyroidectomy with autotransplantation. Demographic data, symptoms, and pre- or postoperative biochemical indicators were compared between two different ranges of parathyroid transplantation weights. RESULTS All 79 surgeries were successful, with a total of 316 parathyroid glands reported among the patients. The patients were diagnosed with parathyroid hyperplasia. Postoperatively, itching, bone pain, and muscle weakness disappeared, while serum parathyroid hormone and phosphate levels significantly decreased. With an average follow-up of 12 months, no transplant-dependent recurrence was observed. CONCLUSION Parathyroid transplantation with a weight of 30-50 mg is a feasible, safe, and effective surgical approach.
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Rao M, Xie J, Zhang H, Tian Y, Cai L. Localized 131 I Uptake in the Deltoid Muscle Bilaterally After Parathyroid Transplantation. Clin Nucl Med 2024; 49:993-994. [PMID: 39150363 DOI: 10.1097/rlu.0000000000005431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
ABSTRACT A 49-year-old woman patient with thyroid cancer accepted thyroidectomy and parathyroid transplantation. One month later, localized 131 I uptake in the deltoid muscle bilaterally was detected by 131 I whole-body imaging performed in 2 days after 131 I administration.
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Devon K, Tinckam K, Humar A, Madani A, Pasternak JD, Saravana-Bawan B, Zahedi A. Successful Deceased Donor Parathyroid Allotransplantation: A Novel Approach in a Patient with Severe Refractory Hypoparathyroidism After Thyroidectomy for Thyroid Cancer. Thyroid 2024; 34:1058-1061. [PMID: 38919120 DOI: 10.1089/thy.2024.0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
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Wang P, Xue H, Zhu X, Xue S. The role of parathyroid autotransplantation for hypoparathyroidism following total thyroidectomy with bilateral central neck dissection. Front Endocrinol (Lausanne) 2024; 15:1402447. [PMID: 39022344 PMCID: PMC11251875 DOI: 10.3389/fendo.2024.1402447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 06/13/2024] [Indexed: 07/20/2024] Open
Abstract
Background Hypoparathyroidism is the most common complication for patients who undergo total thyroidectomy (TT) with bilateral central lymph node dissection (BCLND). The objective of this retrospective study was to investigate the relationship between parathyroid autotransplantation (PA) and postoperative hypoparathyroidism. Materials and Methods Four hundred and sixty-five patients with papillary thyroid carcinoma (PTC) who underwent TT with BCLND (including prophylactic and therapeutic BCLND) by the same surgeon were enrolled in this retrospective study. They were divided into five groups based on the number of PAs. Group 0 was defined as no PA, while Group 1, 2, 3, and 4 were considered as 1, 2, 3, and 4 PAs during TT with BCLND, respectively. Results Transient and permanent hypoparathyroidism occurred in 83 (17.8%) and 2 (0.4%) patients who underwent TT and BCLND, respectively. The incidence of transient hypoparathyroidism increased gradually with an increase in the number of PAs. Compared with the previous group, Groups 2 and 3 had significantly more cases of transient hypoparathyroidism (p=0.03 and p=0.04, respectively). All cases of permanent hypoparathyroidism occurred in the patients without PA. Compared with Group 0, there were more removed central lymph nodes (RCLNs) in patients with one PA. Furthermore, Group 2 had more metastatic central lymph nodes(MCLNs) and RCLNs than Group 1.The number of PAs was the only identified risk factor for transient hypoparathyroidism after the multivariate logistic regression analysis. The median parathyroid hormone level recovered to the normal range within 1 month after surgery. Conclusion With an increasing number of PAs, the possibility of transient hypoparathyroidism also increases in patients with PTC who undergo TT and BCLND. Considering the rapid recovery of transient hypoparathyroidism in 1 month, two PAs during TT and BCLND could be a good choice, leading to an increase in the central lymph node yield and no permanent hypoparathyroidism. However, this conclusion should be validated in future multicenter prospective studies.
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Frye CC, Sullivan J, Sanka SA, Smith ER, Goetz B, Brunt LM, Gillanders W, Brown TC, Olson JA, Hall B, Pandian TK. Cost-Effectiveness of Parathyroid Cryopreservation and Autotransplantation. JAMA Surg 2024; 159:634-641. [PMID: 38506884 PMCID: PMC10955396 DOI: 10.1001/jamasurg.2024.0175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/24/2023] [Indexed: 03/21/2024]
Abstract
Importance Delayed autotransplantation of cryopreserved parathyroid tissue (DACP) is the only surgical treatment for permanent postoperative hypoparathyroidism. Studies suggest that only a small minority of cryopreserved samples are ultimately autotransplanted with highly variable outcomes. For these reasons, many have questioned the economic utility of the process, although, to the authors' knowledge, this has never been formally studied. Objective To report the clinical outcomes of parathyroid cryopreservation and DACP at a large academic institution and to determine the cost-effectiveness of this treatment. Design, Setting, and Participants An institutional review board-approved, retrospective review of patients at a single institution who underwent DACP over a 17-year period was conducted with a median follow-up of 48.2 months. A forward-looking cost-utility analysis was then performed to determine the economic utility of cryopreservation/DACP vs usual care (monitoring and supplementation). Patients who had parathyroid tissue in cryopreserved storage between August 2005 to September 2022 at a single-center, academic, quaternary care center were identified. Exposure Parathyroid cryopreservation and DACP. Main Outcomes and Measures Graft functionality, clinical outcomes, and cost utility using a willingness-to-pay threshold of $100 000 per quality-adjusted life-year (QALY). Results A total of 591 patients underwent cryopreservation. Of these, 10 patients (1.7%; mean [SD] age, 45.6 [17.9] years; 6 male [60%]) underwent DACP. A minority of autografts (2 [20%]) were subsequently fully functional, one-half (5 [50%]) were partially functional, and 3 (30%) were not functional. The cost-utility model estimated that at a large academic center over 10 years, the additional cost of 591 patients undergoing cryopreservation and 10 patients undergoing autotransplantation would be $618 791.64 (2022 dollars) and would add 8.75 QALYs, resulting in a cost per marginal QALY of $70 719.04, which is less than the common willingness-to-pay threshold of $100 000/QALY. Conclusions and Relevance The reimplantation rate of cryopreserved tissue was low (<2%), but when implanted, autografts were at least partially functional 70% of the time. In the first-ever, to the authors' knowledge, formal cost analysis for this treatment, results of the current model suggest that cryopreservation and autotransplantation were cost-effective compared with the usual care for hypoparathyroidism at a large, academic institution. It is recommended that each surgical center consider whether the economic and logistical commitments necessary for cryopreservation are worthwhile for their individual needs.
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Chou FF, Chi SY, Wu YJ, Chan YC, Huang SC. Preoperative work-up and results of parathyroidectomy plus auto-transplantation for the elderly with secondary hyperparathyroidism. Asian J Surg 2024; 47:880-885. [PMID: 37989683 DOI: 10.1016/j.asjsur.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/17/2023] [Accepted: 10/06/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Total parathyroidectomy for secondary hyperparathyroidism has low morbidity and mortality rates and requires a special workup in the preoperative period. METHODS Neck echography and technetium-99m-sestamibi scintigraphy were performed preoperatively. Cardiac echography, a thallium-201 myocardial perfusion scan, and cardiac catheterization were performed if necessary. During surgery, we removed all the parathyroid glands and the upper thymus and autotransplanted 100 mg of the smallest gland into the subcutaneous tissue of the forearm. RESULTS The success rate in three months after total parathyroidectomy was 91.7% without mortality. In the elderly (age ≤65 years, n = 35), bone pain, skin itching, general weakness, and insomnia improved three months after surgery, and grip strength increased significantly. One year after parathyroidectomy, the serum levels of Ca, P, alkaline phosphatase, and intact parathyroid hormone were all within the normal ranges. Except for the bone mineral density (BMD) of the radial distal one-third, the BMD of the lumbar spine (L2 to L4), femoral neck, femoral global, and radial global increased significantly. Furthermore, the bone density T-scores of the lumbar spine (L2 to L4), femoral neck, femoral global, radial distal one-third, and radial global improved significantly. CONCLUSIONS After a meticulous preoperative workup, parathyroidectomy plus autotransplantation can be performed safely for the treatment of symptomatic secondary hyperparathyroidism in the elderly to improve their quality of life and decrease their incidence of bone fractures.
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Abood A, Ovesen T, Rolighed L, Triponez F, Vestergaard P. Hypoparathyroidism following total thyroidectomy: high rates at a low-volume, non-parathyroid institution. Front Endocrinol (Lausanne) 2024; 15:1330524. [PMID: 38304463 PMCID: PMC10833226 DOI: 10.3389/fendo.2024.1330524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/02/2024] [Indexed: 02/03/2024] Open
Abstract
Background Hypoparathyroidism following total thyroidectomy is globally the most common complication to thyroid surgery. The reported complication rates vary widely and might be highly dependent on the surgical experience. In this study we aimed to evaluate the rate of hypoparathyroidism following primary total thyroidectomy at a low-volume institution that only performs thyroid surgery and does not have any experience with parathyroid surgery. Methods Retrospective cohort study. All patients undergoing primary total thyroidectomy at the ENT-Department, Goedstrup Hospital, Denmark, over a 5-year period (2016-2020) were identified through the procedure codes for total thyroidectomy. Medical records, pathology reports, biochemical and medical histories were fully assessed for each patient. The primary endpoint was the rate of hypoparathyroidism- both immediate and permanent. Secondary outcomes were parathyroid gland identification rates, rates of parathyroid gland autotransplantation, and rates of inadvertent parathyroid gland excision. Results A total of 89 patients were included in the final analysis. A total of 33 patients (37.1%) experienced immediate hypoparathyroidism following surgery, while 30 patients (33.7%) still were on active vitamin D two months postoperatively. One year following surgery, 28 patients (31.5%) were still on active vitamin D and were considered as having permanent hypoparathyroidism. Sixty-one percent of the parathyroid glands were identified intraoperatively, and 19% of the patients experienced parathyroid autotransplantation. Inadvertent parathyroid gland excision occurred for 21% of the patients and was associated with a significantly increased risk of permanent hypoparathyroidism (RR = 2.99; 95% CI: 1.36 - 6.62, p = 0.005). Conclusion Both transient and permanent hypoparathyroidism following total thyroidectomy at a low-volume, non-parathyroid institution occurred with much higher frequencies than previously reported. The elevated rates were most likely due to the low-volume, non-parathyroid nature of the surgeons which in part was mirrored in low parathyroid gland identifications rates, and high rates of autotransplantation and inadvertent parathyroid gland excision.
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Cocco PD, Spaggiari M, Petrochenkov E, Bencini G, Giulianotti PC, Fratti A, Tzvetanov I, Campara M, Davis M, Dancy K, Kittle H, Angelos P, Benedetti E. Parathyroid Allotransplantation: Report of Outcomes in 3 Patients. Transplant Proc 2024; 56:173-177. [PMID: 38195287 DOI: 10.1016/j.transproceed.2023.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/30/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND Hypoparathyroidism is a relatively rare endocrine disorder defined as inadequate parathyroid hormone (PTH) secretion leading to a clinical syndrome characterized by hyperphosphatemia and hypocalcemia. This condition has high morbidity; patients present with a heterogeneous range of emotional, mental, and physical symptoms. We present our experience with PTH transplantation, using parathyroid glands surgically removed in the setting of secondary hyperparathyroidism, with a description of the clinical course, immunosuppressive management, and surgical technique. METHODS Between 2017 and 2021, 3 patients underwent parathyroid allotransplantation at the University of Illinois at Chicago. The 2 outcomes of interest were (1) symptomatic relief and improvement in calcium levels and (2) time to graft failure, defined as the presence of undetectable PTH levels. RESULTS All 3 patients experienced dramatic improvement in their debilitating symptoms, even though 2 patients required repeated PTH transplantation procedures. One patient had a remarkable course with symptom resolution, normalization of PTH levels, and a great reduction in calcium supplementation. CONCLUSION The use of hyperplastic glands from patients with secondary hyperparathyroidism undergoing 4-gland parathyroidectomy with autotransplantation represents an important source. However, a uniform definition of graft viability and prospective studies with long follow-ups are needed to address how much parathyroid tissue is optimally transplanted and the need for immunosuppression. Most patients affected by hypoparathyroidism are successfully managed by medical treatment; however, some do not respond to therapy and present debilitating symptoms related to hypocalcemia. This subgroup may benefit from parathyroid allotransplantation. Our 3 patients had remarkable improvement in their symptoms with the adoption of hyperplastic glands. Two out of 3 patients required multiple procedures to sustain symptom control.
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He H, Yan S, Chen DD, Guo C, Xi ZH. Diagnostic value of contrast-enhanced ultrasound in judging the survival of graft after heteroautoplasty for secondary hyperparathyroidism. Technol Health Care 2024; 32:2941-2949. [PMID: 38905065 DOI: 10.3233/thc-231191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
BACKGROUND Secondary hyperparathyroidism (SHPT) is one of the common complications of end-stage renal disease-uremia, and is mainly manifested as parathyroid hyperplasia and abnormal secretion of parathyroid hormone (PTH). OBJECTIVE To investigate the value and advantages of contrast-enhanced ultrasound (CEUS) in evaluating the survival of autografts after parathyroidectomy + parathyroid autotransplantation. METHODS In this study, 125 patients with renal failure due to polycystic kidney disease, chronic nephritis, diabetic nephropathy, lupus nephritis, and atherosclerotic nephropathy were enrolled as the participants and each of them had 4 secondary hyperactive parathyroid glands and underwent parathyroid autotransplantation. One parathyroid gland was taken from each patient and equally divided into 4 parts and placed in the subcutaneous fat of one forearm for transplantation. CEUS was performed 14 days after the transplantation to observe the micro blood supply of the graft and assess the survival and secretory function of the transplanted parathyroid. The grafts were divided into the partial survival group and the total survival group based on the enhancement characteristics. The survival of the grafts was determined by comparing the parathyroid hormone level in bilateral elbow cephalic veins 1 month after surgery. RESULTS Among the 125 patients, 112 had linear or punctate enhancement of 2-4 parathyroid glands 14 days after surgery, and 13 patients had linear or punctate enhancement of 0-1 parathyroid gland. There were statistically significant differences in the perfusion pattern, enhancement uniformity, and parathyroid hormone levels in the cephalic veins at the elbow on both the graft and non-graft sides among all groups (P< 0.05). CONCLUSION Compared to the detection of the difference in the parathyroid hormone level in the cephalic vein of bilateral elbows 1 month after surgery, CEUS can reflect the parathyroid survival after transplantation more quickly and accurately 2 weeks later, and provide a more rapid and agile non-invasive clinical diagnosis method.
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Ersoy YE, Goncu B, Yucesan E, Salepcioglu Kaya H, Kazancioglu R, Akcakaya A. An Alternative and Up-To-Date Recommendation for a Proper Site for Parathyroid Transplantation: The Omentum. EXP CLIN TRANSPLANT 2024; 22:102-109. [PMID: 38385383 DOI: 10.6002/ect.mesot2023.o17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
OBJECTIVES Various sites have been used for parathyroid allotransplant, such as injection into the forearm, sternocleidomastoid, or deltoid muscles. However, transplant efficiency in these regions varies according to the results reported in the literature and also obtained from our previous studies. Using the omentum "as a natural incubator" for composite tissue-derived cell transplants to increase transplant success is possible. MATERIALS AND METHODS To examine the efficiency of transplant sites for parathyroid allotransplant, we compared clinical cases from the literature and our experience with 23 cases. The omental transplant process is performed under general anesthesia by laparoscopic intervention. The abdominal cavity is visualized with an endocamera from a 5-mm trocar. With the help of a flexible catheter from another 5-mm trocar, microencapsulated or naked parathyroid cells are deposited on the omentum in approximately 30 mL of isotonic saline. The trocar sites are then sutured, and the surgery is terminated. Recipients were followed for 6 months with examination of biochemical parameters (parathormone, calcium, and phosphorus levels), medication use, and clinical scoring. RESULTS In the 23 patients who received parathyroid allotransplants over the omentum, 7 recipients did not exhibit any changes according to the scoring system criteria. However, on average, serum calcium and phosphorus levels remained within the healthy reference range. In addition, use of oral medications among patients decreased, indicating successful transplant survival. These results were consistent with a significant decrease in hypocalcemia symptoms among patients. CONCLUSIONS In the 23 patients, the success rate was 69.5% for the first 6-month period after transplant. Recent developments and large cohorts are needed to demonstrate the higher efficacy of parathyroid allotransplant over the omentum.
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Mikhail AR, Williams RA, Son LS, Danos DM, Samuel J, Kleinpeter KP, LeBlanc KA. Total Parathyroidectomy Without Autotransplantation for ESRD Patients With Secondary Hyperparathyroidism; an Effective Alternative. Am Surg 2023; 89:5349-5354. [PMID: 36573847 DOI: 10.1177/00031348221148364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
BACKGROUND The most common operations performed for secondary hyperparathyroidism include subtotal parathyroidectomy (STPX) and total parathyroidectomy with autotransplantation (TPX + AT). We present a series of ESRD patients treated with total parathyroidectomy without autotransplantation (TPX). METHODS This is a retrospective cohort analysis of ESRD patients, age 18 years or older, with three or more glands resected on final pathology and follow-up parathyroid hormone levels obtained up to 1.5 years postoperatively. The primary endpoint was recurrence of hyperparathyroidism (defined as PTH > 500 pg/mL). RESULTS The incidence of recurrent hyperparathyroidism at 1.5 years was 5.9% (2/34). The incidence of persistent hyperparathyroidism at 1.5 years was 11.8% (4/34). In this series, no patients were hospitalized for symptomatic hypocalcemia or experienced pathologic bone fractures. CONCLUSIONS Recurrence rates are low with TPX. The most common cause of recurrent and persistent disease is resection of three rather than four glands. The known complications of TPX, pathologic fractures, and severe hypocalcemia, were not seen in this study.
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Richards BA, Vierkant RA, Dy BM, Foster TR, McKenzie TJ, Lyden ML. Intraoperative Parathyroid Hormone Monitoring Is of Limited Usefulness in Guiding Autotransplantation in Reoperative or Subtotal Parathyroidectomy for Primary Hyperparathyroidism. Am Surg 2023; 89:5421-5427. [PMID: 36786277 DOI: 10.1177/00031348231156758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
INTRODUCTION Patients with primary hyperparathyroidism (1HPT) undergoing reoperative or subtotal parathyroidectomy (PTX) may undergo autotransplantation (ATX) when the viability of remaining tissue is unknown. This study aims to identify whether intraoperative parathyroid hormone levels (IOPTH) can determine ATX candidacy. METHODS Patients with 1HPT who underwent PTX with ATX at our institution were identified. IOPTH and PTH values within 24 h, 2-4 weeks, and >1 month postoperative were analyzed. Patients were classified as either a candidate for ATX (low PTH after 2-4 weeks) or not a candidate based on postoperative PTH (normal PTH after 2-4 weeks). Associations of ATX candidate status with demographic and clinical attributes were studied. RESULTS 268 had a reoperative (49%) or subtotal PTX with ATX. 151 had data for PTH analysis, and 21 (14%) were identified as candidates for ATX. The mean % decline in IOPTH from baseline to 20 min post-excision was 51% in noncandidates vs 73% in candidates (P = .002). The mean change in IOPTH from baseline to final was 52% in noncandidates and 83% in candidates (P = .009). A decrease in IOPTH from baseline to 20 min post-excision of 23.4% or greater or a final PTH of 52 pg/mL or less would be an indication for ATX. Of the 21 who needed an ATX, it failed in 10. CONCLUSION Parathyroid ATX is frequently unnecessary, and the viability is less than expected. While candidates for ATX have a greater IOPTH % decline at all points during surgery and a lower final IOPTH, the clinical practicality of using IOPTH to determine ATX candidacy is limited.
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Iorga C, Iorga CR, Andreiana I, Bengulescu I, Constantin T, Strambu V. Advantages of total parathyroidectomy in patients with secondary hyperparathyroidism induced by end stage renal disease. Front Endocrinol (Lausanne) 2023; 14:1191914. [PMID: 38075043 PMCID: PMC10703479 DOI: 10.3389/fendo.2023.1191914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 10/09/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction Secondary hyperparathyroidism, as a result of chronic kidney disease could be treated medically or surgically. When pharmacotherapy fails, patients undergo surgery - parathyroidectomy, the curative treatment of secondary hyperparathyroidism (SHPT). There are currently 3 accepted surgical techniques, each with supporters or opponents - total parathyroidectomy, subtotal parathyroidectomy and parathyroidectomy with immediate autotransplantation. Methods In this paper we described our experience on a series of 160 consecutive patients diagnosed with secondary hyperparathyroidism who underwent surgery, in 27 cases it was totalization of the intervention (patients with previously performed subtotal parathyroidectomy or with supernumerary glands and SHPT recurrence). We routinely perform total parathyroidectomy, the method that we believe offers the best results. Results The group of patients was studied according to demographic criteria, paraclinical balance, clinical symptomatology, pre- and postoperative iPTH (intact parathormone) values, SHPT recurrence, number of reinterventions. In 31 cases we found gland ectopy and in 15 cases we discovered supernumerary parathyroids. A percentage of 96.24% of patients with total parathyroidectomy did not show recurrence. Discussions After analyzing the obtained results, our conclusion was that total parathyroidectomy is the intervention of choice for patients suffering from secondary hyperparathyroidism when pharmacotherapy fails in order to prevent recurrence of the disease and to correct the metabolic parameters.
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Alshanafey S, Maqbol S, AlAmeer A, Ahmad F, Al-Ashwal A. Surgical management of neonatal severe hyperparathyroidism. Ann Saudi Med 2023; 43:352-356. [PMID: 37916585 PMCID: PMC11182428 DOI: 10.5144/0256-4947.2023.01.11.1200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 08/15/2023] [Indexed: 11/03/2023] Open
Abstract
BACKGROUND Neonatal severe hyperparathyroidism (NSHPT) is a rare disease that can be lethal. Most patients require parathyroidectomy. OBJECTIVE Report experience in managing this severe disease. DESIGN Retrospective chart review of case series. SETTING Tertiary health care center. PATIENTS AND METHODS We reviewed data on patients managed for NSHPT from June 2001 to January 2023. Demographic, clinical, and follow-up data were collected, and descriptive data were generated. MAIN OUTCOME MEASURES Pre- and postoperative levels of parathyroid hormone (PTH) and serum calcium, and effect of autotransplantation. SAMPLE SIZE 19. RESULTS The 13 males and 6 females had a a mean age of 46 days at referral. The mean preoperative parathyroid hormone (PTH) and serum calcium levels were 996 ng/L and 4.54 mmol/L, respectively. Twelve patients underwent ultrasonography preoperatively. Of these, six had prominent glands, while no glands were seen in the other six. A Sestamibi scan was done for 15 patients, of which nine showed negative results and six showed positive results, with three glands observed in the neck and three in the sublingual area. Nineteen patients underwent renal ultrasonography, with nine showing nephrocalcinosis. The mean age at surgery was 5.2 months. Total parathyroidectomy (four glands) was performed in 17 patients, and 15 underwent concurrent auto-transplantation. One patient had three glands removed, in addition to auto-transplantation. Another underwent single gland excision as a redo-surgery after previous surgery elsewhere. The mean postoperative follow-up duration was 6 years. The mean postoperative PTH and calcium levels were 25 ng/L and 1.64 mmol/L, respectively. Ultimately, all the patients were required to initiate calcium and vitamin D supplements, except for two patients who had undergone auto-transplantation. Molecular genetic screening of the calcium-sensing receptor gene reported likely pathogenic/pathogenic mutations in 16 of 19 patients (13 were homozygous, two were heterozygous, one was negative, and data was unavailable for the remaining three patients). CONCLUSIONS Surgical treatment of NSHPT is effective. Preoperative radiological localization studies did not impact the treatment plan. Auto-transplantation proved ineffective in maintaining independence from medical supplements. LIMITATIONS The retrospective nature of the study may imply inaccuracybut since the data are gathered from electronic medical records, we believe it is highly accurate. The small sample size limits generalizability.
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Goncu B, Yucesan E, Basoglu H, Gul B, Aysan E, Ersoy YE. Xenotransplantation of Microencapsulated Parathyroid Cells as a Potential Treatment for Autoimmune-Related Hypoparathyroidism. EXP CLIN TRANSPLANT 2023; 21:901-912. [PMID: 34387152 DOI: 10.6002/ect.2020.0403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Hypoparathyroidism occurs as a part of a complex autoimmune syndrome or iatrogenically after neck surgery. The disease presents many challenges, such as hypocalcemia, hyperphosphatemia, and low/undetectable parathormone levels. Allotransplantation of parathyroid tissue or cells has been reported as a promising option to overcome these effects. Transplantation of microencapsulated parathyroid tissue or cells offers an immune escape, which particularly restores the parathyroid function for autoimmune-related hypoparathyroidism. So far, clinical and in vivo studies have demonstrated limited graft survival and instability for the available biocompatible materials. In addition, the transplant site, proper local isolation, and biocompatibility of materials are directly related to survival rate. MATERIALS AND METHODS A microencapsulated parathyroid xenotransplant model by using high guluronic acid-containing ultrapure alginate transplanted into rat omentum was tested in vivo for 1 year. RESULTS After stability of empty microcapsules was ensured, parathyroid cells were microencapsulated and transplanted in rats, with results compared versus rats with naked (nonencapsulated) parathyroid cells (both groups followed for 64 weeks). Rats remained normocalcemic, and preinflammatory cytokine levels showed dramatic changes. Despite a delay posttransplant, parathormone levels increased significantly. All retrieved microencapsules elicited pericapsular fibrotic overgrowth; however, the fibrosis area was shown to be well tolerated. CONCLUSIONS The possible role of accumulation/cell infiltration of immune response remains to be elucidated. In conjunction with this, the use of nonencapsulated parathyroid cells was also positively correlated with survival rates. A similar evaluation using ultrapure alginate materials and omental transplantation may enable the future determination for the long-term effects of correction of parathormone insufficiency in patients with severe hypocalcemic responses and other endocrine diseases.
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Paladino NC, Remde H, Guerin C, Morange I, Taïeb D, Sebag F. Accidental parathyroidectomy during total thyroidectomy and hypoparathyroidism in a large series of 766 patients: incidence and consequences in a referral center. Langenbecks Arch Surg 2023; 408:393. [PMID: 37817055 DOI: 10.1007/s00423-023-03130-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/29/2023] [Indexed: 10/12/2023]
Abstract
PURPOSE Transient hypoparathyroidism is the most common complication after total thyroidectomy, and accidental parathyroidectomy (AP) may be a cause. The aim of this study was to investigate the incidence of AP and its impact on postoperative calcemia. MATERIALS AND METHODS From February 2016 to May 2018, 766 patients undergoing total thyroidectomy were prospectively included. Surgical indications, hormonal status, definitive histology, and postoperative calcium and PTH levels were analyzed. RESULTS 578/(75.45%) were women and 188/(24.55%) men with mean age of 53.4 years. Parathyroid tissue on the thyroid specimen was observed in 40 (5.2%) patients: 30 APs and 10 parathyroid fragments. Among the 30 APs, 12 glands were intrathyroid and 18 (2.3%) in eutopic location. 97 (12.6%) patients were treated for postoperative hypocalcemia: 90 (11.7%) had transient and 5 (0.6%) definitive hypoparathyroidism; 2 were lost in follow-up. 13/30 (43.3%) with AP had transient hypoparathyroidism. A strong correlation was found (p < 0.0001) between AP and postoperative hypocalcemia. 1/30 (3.3%) patient with APs had definitive hypoparathyroidism. Transient and persistent nerve palsies were found in 10 (1.3%) and 3 (0.4%) patients, respectively. DISCUSSION A careful examination of the thyroid gland after resection help to identify an AP that could be autotransplanted. Surgeon and hospital activity volume per years seem to reduce the risk of hypoparathyroidism. CONCLUSION Total thyroidectomy and intrathyroid localization of parathyroid glands are risk factors for the AP. The incidence of AP was 2.3%, and this remains low due to our longstanding experience in thyroid and parathyroid surgery.
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孙 军, 郭 林, 康 嘉, 陶 燕, 王 箭. [Clinical application of parathyroid autofluorescence imaging in endoscopic thyroid surgery]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY 2023; 37:832-836. [PMID: 37828890 PMCID: PMC10803226 DOI: 10.13201/j.issn.2096-7993.2023.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Indexed: 10/14/2023]
Abstract
Objective:To investigate the application value of near-infrared autofluorescence imaging in identifying and protecting parathyroid glands in endoscopic thyroid surgery. Methods:From May 2022 to February 2023, 158 patients who underwent endoscopic thyroid surgery in the Department of Thyroid and Breast Vascular Surgery of Guilin People's Hospital were selected. The endoscopic fluorescence camera system was used to monitor the parathyroid glands under autofluorescence during endoscopic thyroid surgery. A total of 214 pieces were collected, among which the first 15 cases that could not be preserved in situ during the operation needed to be autotransplanted or the tissue clamped parts that could not be clearly identified as parathyroid glands were sent to fast-frozen pathology to determine whether they were parathyroid glands. Results:Among the first 15 patients who could not be preserved in situ during the operation or whose anatomy could not be clearly defined, 23 parathyroid glands were detected by autofluorescence imaging, 21 parathyroid glands were confirmed by pathology, and 2 were adipose tissue, with an accuracy rate of 91.30%; 158 patients underwent surgery Blood calcium decreased 2 hours after operation compared with preoperative blood calcium(P<0.05), decreased blood calcium 5 days after operation compared with preoperative blood calcium(P<0.01), and increased slightly 5 days after the operation compared to blood calcium 2 hours after the operation, but the difference was not statistically significant(P>0.05); while comparing parathyroid hormone(PTH), PTH at 2 hours after operation decreased significantly compared with PTH before operation(P<0.01), and PTH at 5 days after operation compared with PTH before operation PTH also decreased(P<0.01), but increased compared with PTH 2 hours after operation(P=0.001). Conclusion:In laparoscopic thyroid surgery, the application of near-infrared autofluorescence imaging technology can help surgeons quickly identify and protect parathyroid glands, and reduce the incidence of permanent hypoparathyroidism. Combining autofluorescence imaging, visual anatomy recognition under magnification of laparoscope, and intraoperative frozen pathological examination "trinity" method can improve the success rate of parathyroid gland recognition.
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Cheng X, Li Y, Chen L. Efficacy of parathyroid autotransplantation in endoscopic total thyroidectomy with CLND. Front Endocrinol (Lausanne) 2023; 14:1193851. [PMID: 37441504 PMCID: PMC10334188 DOI: 10.3389/fendo.2023.1193851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/06/2023] [Indexed: 07/15/2023] Open
Abstract
Purpose To evaluate the safety and efficacy of autologous parathyroid transplantation in laparoscopic total thyroidectomy combined with central lymph node dissection (CLND). Methods Retrospective analysis of clinical data of 152 patients admitted to the General Surgery Department of Gansu Provincial People's Hospital who underwent endoscopic total thyroidectomy combined with CLND from June 2018 to December 2021. The intraoperative parathyroid glands were divided into the orthotopic preservation group (non-transplantation group) and the immediate active autologous transplantation group (transplantation group) according to the different treatment management of parathyroid glands during operation. The levels of Ca2+ in parathyroid blood and the incidence of hypoparathyroidism were compared between the two groups before operation and 1 day, 3 day, 1 week, 1 month, 3 months and 6 months after operation. Results There was no significant difference in PTH between the preoperative transplantation group compared and the non-transplantation group (P>0.05); The PTH in the transplantation group was lower than that of the non-transplantation group 1 and 3 d after surgery, and the difference was statistically significant (P<0.05); No statistically significant difference in PTH between patients in the transplantation group compared with those in the non-transplantation group at 1 week postoperatively (P>0.05); PTH was significantly higher in the transplant group than in the non-transplant group at 1, 3 and 6 months after surgery, with statistically significant differences (P<0.05); there was no statistically differences (P>0.05) in serum Ca2+ between the preoperative, 1d, 3d and 1 week postoperative transplantation group and the non-transplantation group; Blood Ca2+ was significantly higher in the transplant group than in the non-transplant group at 1, 3 and 6 months after surgery, with statistically significant differences (P<0.05); The rate of temporary hypoparathyroidism in the transplantion group was higher than that in the non-transplantion group, and the rate of permanent hypoparathyroidism was lower than that in the non-transplantion group (P=0.044); There was no significant difference in the concentration of PTH in the cephalic vein of the elbow between the transplanted side and the non-transplanted side at 1 day and 3 days postoperatively (P>0.05); the concentration of PTH in cephalic vein of the elbow was significantly higher than that in non-transplanted side at 1 week, 1 month, 3 months and 6 months postoperatively (P<0.001); the number central area dissection and metastasis dissection in the transplantation group were significantly higher than those in the non-transplantation group (P<0.05). Conclusions Most autologous parathyroid glands, having functional parathyroid autograft, is helpful to the occurrence of hypoparathyroidism after endoscopic total thyroidectomy with CLND, and it is an effective strategy to prevent permanent hypoparathyroidism, and more thorough area dissection is beneficial to the disease prognosis.
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Rao SS, Rao H, Moinuddin Z, Rozario AP, Augustine T. Preservation of parathyroid glands during thyroid and neck surgery. Front Endocrinol (Lausanne) 2023; 14:1173950. [PMID: 37324265 PMCID: PMC10266226 DOI: 10.3389/fendo.2023.1173950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/13/2023] [Indexed: 06/17/2023] Open
Abstract
The parathyroid glands are situated in close proximity to the thyroid gland. They have an important endocrine function maintaining calcium and phosphate homeostasis in the body by the secretion of parathormone (PTH), which is responsible for this function. The parathyroid glands are commonly damaged during thyroid surgeries. This could lead to transient or permanent hypoparathyroidism in 30% of cases. Preservation of the parathyroid glands, is an important and integral part of thyroidectomy and other surgical interventions in the neck. The main principle underlying this is a thorough understanding of parathyroid anatomy in relation to the thyroid gland and other important structures in the area. There can also be significant variation in the anatomical location of the glands. Various techniques and methods have been described for parathyroid preservation. They include intraoperative identification utilizing indocyanine green (ICG) fluorescence, carbon nanoparticles, loupes, and microscopes. The techniques of surgery (meticulous capsular dissection), expertise, central compartment neck dissection, preoperative vitamin D deficiency, extent and type of thyroidectomy are the risk factors associated with damaged thyroids, inadvertent parathyroidectomy and subsequent hypoparathyroidism. Parathyroid Autotransplantation is a treatment option for inadvertent parathyroidectomy. Ultimately, the best way to assure normal parathyroid function is to preserve them in situ intraoperatively undamaged.
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Hiramitsu T, Hasegawa Y, Futamura K, Okada M, Goto N, Narumi S, Watarai Y, Tominaga Y, Ichimori T. Treatment for secondary hyperparathyroidism focusing on parathyroidectomy. Front Endocrinol (Lausanne) 2023; 14:1169793. [PMID: 37152972 PMCID: PMC10159274 DOI: 10.3389/fendo.2023.1169793] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/07/2023] [Indexed: 05/09/2023] Open
Abstract
Secondary hyperparathyroidism (SHPT) is a major problem for patients with chronic kidney disease and can cause many complications, including osteodystrophy, fractures, and cardiovascular diseases. Treatment for SHPT has changed radically with the advent of calcimimetics; however, parathyroidectomy (PTx) remains one of the most important treatments. For successful PTx, removing all parathyroid glands (PTGs) without complications is essential to prevent persistent or recurrent SHPT. Preoperative imaging studies for the localization of PTGs, such as ultrasonography, computed tomography, and 99mTc-Sestamibi scintigraphy, and intraoperative evaluation methods to confirm the removal of all PTGs, including, intraoperative intact parathyroid hormone monitoring and frozen section diagnosis, are useful. Functional and anatomical preservation of the recurrent laryngeal nerves can be confirmed via intraoperative nerve monitoring. Total or subtotal PTx with or without transcervical thymectomy and autotransplantation can also be performed. Appropriate operative methods for PTx should be selected according to the patients' need for kidney transplantation. In the case of persistent or recurrent SHPT after the initial PTx, localization of the causative PTGs with autotransplantation is challenging as causative PTGs can exist in the neck, mediastinum, or autotransplanted areas. Additionally, the efficacy and cost-effectiveness of calcimimetics and PTx are increasingly being discussed. In this review, medical and surgical treatments for SHPT are described.
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Guo XL, Yin WY. A preoperative parathyroid scan is important for the total removal of the transplanted parathyroid tissue in recurrent secondary hyperthyroidism: A case report and literature review. Medicine (Baltimore) 2022; 101:e32453. [PMID: 36595874 PMCID: PMC9794238 DOI: 10.1097/md.0000000000032453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 12/06/2022] [Indexed: 12/28/2022] Open
Abstract
RATIONALE Secondary hyperparathyroidism was one of mineral and bone disorders owing to chronic kidney disease. Patients who suffer from secondary hyperparathyroidism would receive medical treatment or parathyroidectomy with or without autotransplantation (AT). However, some patients receiving parathyroidectomy with AT have recurrent hyperparathyroidism, which impacts their lives. Patients with recurrent hyperparathyroidism may present persistent hypercalcemia and hyperphosphatemia, which would cause cardiovascular disease, like atherosclerosis. PATIENT CONCERNS A 63-year-old female of Asian descent with chronic kidney disease who suffered from recurrent hyperparathyroidism for twice. The patient underwent parathyroidectomy with AT in the left thigh when secondary hyperparathyroidism happened. After 3 months, recurrent hyperparathyroidism happened. DIAGNOSIS The patient was diagnosed with recurrent hyperparathyroidism due to chronic kidney disease with hyperparathyroidism status post parathyroidectomy with AT in the left thigh. Our patient also suffered from mineral and bone disorder. INTERVENTION Two parathyroid adenoma in the left thigh were found. However, one of them was too small to found in the operation. Therefore, autograftectomy of the large one was performed. However, hyperparathyroidism happened again. This time, the autograftectomy was performed under dual phase Tc-99m MIBI (99m Tc-methoxy isobutyl isonitrile) parathyroid scintigraphy and it succeeded. OUTCOMES After secondary autograftectomy, the value of intact parathyroid hormone was surveyed immediately and dropped by two-third followed by gradual reduction in the following weeks. The calcemia and phosphatemia were back to normal gradually. LESSONS In our case, importance of scintigraphy in the parathyroidectomy was confirmed.
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Zhang JLH, Appelman-Dijkstra NM, Schepers A. Parathyroid Allotransplantation: A Systematic Review. Med Sci (Basel) 2022; 10:medsci10010019. [PMID: 35323218 PMCID: PMC8953572 DOI: 10.3390/medsci10010019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 11/24/2022] Open
Abstract
Background: To date, there is no satisfactory treatment for patients with calcium and vitamin D supplementation refractive hypoparathyroidism. Parathyroid allotransplantation by design is a one-time cure through its restoration of the parathyroid function and, therefore, could be the solution. A systematic literature review is conducted in the present paper, with the aim of outlining the possibilities of parathyroid allotransplantation and to calculate its efficacy. Additionally, various transplantation characteristics are linked to success. Methods: This review is carried out according to the PRISMA statement and checklist. Relevant articles were searched for in medical databases with the most recent literature search performed on 9 December 2021. Results: In total, 24 articles involving 22 unique patient cohorts were identified with 203 transplantations performed on 148 patients. Numerous types of (exploratory) interventions were carried out with virtually no protocols that were alike: there was the use of (non-) cryopreserved parathyroid tissue combined with direct transplantation or pretreatment using in vitro techniques, such as culturing cells and macro-/microencapsulation. The variability increased further when considering immunosuppression, graft histology, and donor–recipient compatibility, but this was found to be reported in its entirety by exception. As a result of the large heterogeneity among studies, we constructed our own criterium for transplantation success. With only the studies eligible for our assessment, the pooled success rate for parathyroid allotransplantation emerged to be 46% (13/28 transplantations) with a median follow-up duration of 12 months (Q1–Q3: 8–24 months). Conclusions: Manifold possibilities have been explored around parathyroid allotransplantation but are presented as a double-edged sword due to high clinical diverseness, low expertise in carrying out the procedure, and unsatisfactory study quality. Transplantations carried out with permanent immunosuppression seem to be the most promising, but, in its current state, little could be said about the treatment efficacy with a high quality of evidence. Of foremost importance in pursuing the answer whether parathyroid allotransplantation is a suitable treatment for hypoparathyroidism, a standardized definition of transplantation success must be established with a high-quality trial.
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Mihai R, Thakker RV. MANAGEMENT OF ENDOCRINE DISEASE: Postsurgical hypoparathyroidism: current treatments and future prospects for parathyroid allotransplantation. Eur J Endocrinol 2021; 184:R165-R175. [PMID: 33599211 PMCID: PMC8052514 DOI: 10.1530/eje-20-1367] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/17/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND Permanent postsurgical hypoparathyroidism (POSH) is a major complication of anterior neck surgery in general and of thyroid surgery in particular. Depending on diagnostic criteria, up to 10% of patients undergoing bilateral thyroid surgery develop POSH. This leads to a multitude of symptoms that decrease the quality of life and burden the healthcare provision through complex needs for medication and treatment of specific complications, such as seizures and laryngospasm. METHODS Narrative review of current medical treatments for POSH and of the experience accumulated with parathyroid allotransplantation. RESULTS In most patients, POSH is controlled with regular use of calcium supplements and active vitamin D analogues but a significant proportion of patients continue to experience severe symptoms requiring repeated emergency admissions. Replacement therapy with synthetic PTH compounds (PTH1-34, Natpara® and PTH1-84, teriparatide, Forsteo®) has been assessed in multicentre trials, but the use of this medication is restricted by costs and concerns related to the risk of development of osteosarcoma. Based on recent case reports of successful allotransplantation of parathyroid tissue between siblings, there is renewed interest in this technique. Data on selection of donors, parathyroid cell preparation before allotransplantation, site and timing of transplantation, need for immunosuppression and long-term outcomes are reviewed. CONCLUSION A prospective trial to assess the efficacy of parathyroid allotransplantation in patients with severely symptomatic protracted post-surgical hypoparathyroidism is warranted.
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Hiramitsu T, Tomosugi T, Okada M, Futamura K, Goto N, Narumi S, Watarai Y, Tominaga Y, Ichimori T. Intact parathyroid hormone levels localize causative glands in persistent or recurrent renal hyperparathyroidism: A retrospective cohort study. PLoS One 2021; 16:e0248366. [PMID: 33793603 PMCID: PMC8016254 DOI: 10.1371/journal.pone.0248366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/24/2021] [Indexed: 11/19/2022] Open
Abstract
Persistent or recurrent renal hyperparathyroidism may occur after total parathyroidectomy and transcervical thymectomy with forearm autograft under continuous stimulation due to uremia. Parathyroid hormone (PTH) levels may reflect persistent or recurrent renal hyperparathyroidism because of the enlarged autografted parathyroid glands in the forearm or remnant parathyroid glands in the neck or mediastinum. Detailed imaging requires predictive localization of causative parathyroid glands. Casanova and simplified Casanova tests may be convenient. However, these methods require avascularization of the autografted forearm for >10 min with a tourniquet or Esmarch. The heavy pressure during avascularization can be incredibly painful and result in nerve damage. An easier method that minimizes the burden on patients in addition to predicting the localization of causative parathyroid glands was developed in this study. Ninety patients who underwent successful re-parathyroidectomy for persistent or recurrent renal hyperparathyroidism after parathyroidectomy between January 2000 and July 2019 were classified according to the localization of causative parathyroid glands (63 and 27 patients in the autografted forearm and the neck or mediastinum groups, respectively). Preoperatively, intact PTH levels were measured from bilateral forearm blood samples following a 5-min avascularization of the autografted forearm. Cutoff values of the intact PTH ratio (intact PTH level obtained from the non-autografted forearm before re-parathyroidectomy/intact PTH level obtained from the autografted forearm before re-parathyroidectomy) were investigated with receiver operating characteristic curves to localize the causative parathyroid glands. Intact PTH ratios of <0.310 with an area under the curve (AUC) of 0.913 (95% confidence interval [CI]: 0.856-0.970; P < 0.001) and >0.859 with an AUC 0.744 (95% CI: 0.587-0.901; P = 0.013) could predict causative parathyroid glands in the autografted forearm and the neck or mediastinum with diagnostic accuracies of 81.1% and 83.3%, respectively. Therefore, we propose that the intact PTH ratio is useful for predicting the localization of causative parathyroid glands for re-parathyroidectomy.
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