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Law RH, Larrabee KA, Stefan AJ, Quan DL, Peterson EL, Singer MC. Intraoperative Parathyroid Hormone Monitoring In Normohormonal Primary Hyperparathyroidism: How Low Do You Go? Laryngoscope 2024; 134:2480-2484. [PMID: 37772923 DOI: 10.1002/lary.31076] [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: 07/07/2023] [Revised: 08/24/2023] [Accepted: 09/18/2023] [Indexed: 09/30/2023]
Abstract
OBJECTIVE The primary goal of this study was to determine in patients with normohormonal primary hyperparathyroidism (NHHPT) what percent reduction in post-excision intraoperative parathyroid hormone (IOPTH) from baseline would yield a rate of cure comparable to that in patients with classical primary hyperparathyroidism (PHPT). METHODS This is a retrospective cohort study of patients who underwent parathyroidectomy between July 2013 and February 2020. Demographic data, preoperative, intraoperative, and postoperative metrics were collected. Patients with NHHPT were compared to those with classical PHPT. Subgroup analyses were performed. RESULTS Of the 496 patients included in the study, 66 (13.3%) were of the normohormonal variant based on preoperative intact parathyroid hormone (PTH) levels and 28 (5.6%) based on baseline IOPTH levels. The cure rates in the two normohormonal groups were not significantly different from their classical counterparts (98.4% and 100.0% vs. 97.1%, p = 1.000). The median percent decline in post-excision IOPTH from baseline that achieved cure in the normohormonal groups were 82.6% and 80.4% compared to their respective controls at 87.3%, p = 0.011 and p = 0.001. Although the rate of multiglandular disease was higher in one of the normohormonal variant groups, this difference was due to a higher rate of double adenomas, not four-gland hyperplasia. CONCLUSION Patients with NHHPT undergoing parathyroidectomy can expect cure rates similar to that in patients with classical PHPT. The results of this study indicate that achieving an 80% drop or more in IOPTH levels predicts a high likelihood of cure. This is true irrespective of whether the patient is deemed normohormonal based on preoperative or intraoperative testing. LEVEL OF EVIDENCE 3 Laryngoscope, 134:2480-2484, 2024.
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Affiliation(s)
- Richard H Law
- Department of Otolaryngology-Head and Neck Surgery, Henry Ford Health, Detroit, Michigan, USA
| | - Katherine A Larrabee
- Department of Otolaryngology-Head and Neck Surgery, Henry Ford Health, Detroit, Michigan, USA
| | - Andrew J Stefan
- Department of Otolaryngology-Head and Neck Surgery, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Daniel L Quan
- Department of Otolaryngology-Head and Neck Surgery, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Edward L Peterson
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, Michigan, USA
| | - Michael C Singer
- Department of Otolaryngology-Head and Neck Surgery, Henry Ford Health, Detroit, Michigan, USA
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Verly E, Lapauw B, Verroken C. Evaluation of the thiazide challenge test to differentiate primary from hypercalciuria-related hyperparathyroidism. J Clin Endocrinol Metab 2024:dgae239. [PMID: 38605120 DOI: 10.1210/clinem/dgae239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/21/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
CONTEXT treatment of primary hyperparathyroidism (PHPT) and secondary hyperparathyroidism due to idiopathic hypercalciuria (SHPT-IH) is markedly different. Robust diagnostic tools to differentiate between both entities are however lacking. OBJECTIVE evaluate the thiazide challenge test (TCT) in clinical practice, its aid in clinical decision making, evaluate the accuracy (sensitivity, specificity) and potentially useful parameters of the TCT. DESIGN monocentric observational retrospective cohort study from January 2017 to November 2023. SETTING outpatient, Ghent University Hospital (Belgium). PATIENTS 25 adult patients with hypercalciuria, elevated parathyroid hormone (PTH), and high-normal or elevated serum calcium that underwent a TCT. INTERVENTION TCT. OUTCOME MEASURES serum, urinary biochemical parameters before and after testing, clinical and imaging outcomes, treatment, and follow-up. RESULTS patients with a TCT-based working diagnosis of PHPT show greater increases in albumin-adjusted calcium and total serum calcium concentration than patients with SHPT-IH (+0,11 ± 0,10 vs. + 0,0071 ± 0,10mmol/l; p = 0,025 and +0,14 ± 0,12 vs. + 0,012 ± 0,15mmol/l; p = 0,024 respectively). The TCT-based working diagnosis of PHPT has a sensitivity of 81,8%, a specificity of 77,8% and a likelihood ratio of 3,68 of estimating a correct final diagnosis.Urinary calcium excretion, PTH, calcium-phosphorous ratio, PTH-inhibition rate, and parathyroid function index do not differ significantly in patients with PHPT compared to those with SHPT-IH. CONCLUSION the TCT aids in discriminating patients with PHPT from those with SHPT-IH based on a rise in serum calcium. Other parameters are not different between both groups. Larger prospective trials are necessary to further define the diagnostic potential of the TCT, its most appropriate biochemical outcome variables, and decision cut-offs.
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Affiliation(s)
- Ewout Verly
- Ghent University Hospital (Department of Endocrinology, Unit for Osteoporosis and Metabolic Bone Diseases)
| | - Bruno Lapauw
- Ghent University Hospital (Department of Endocrinology, Unit for Osteoporosis and Metabolic Bone Diseases), Ghent University (Department of Internal Medicine and Pediatrics)
| | - Charlotte Verroken
- Ghent University Hospital (Department of Endocrinology, Unit for Osteoporosis and Metabolic Bone Diseases)
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Krumeich LN, Santos A, Fraker DL, Kelz RR, Wachtel H. Modern Trends for Primary Hyperparathyroidism: Intervening on Less Biochemically Severe Disease. J Surg Res 2024; 296:489-496. [PMID: 38325011 DOI: 10.1016/j.jss.2024.01.013] [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: 05/04/2023] [Revised: 12/20/2023] [Accepted: 01/07/2024] [Indexed: 02/09/2024]
Abstract
INTRODUCTION Primary hyperparathyroidism (PHPT) is defined by autonomous parathyroid hormone secretion, which has broad physiologic effects. Parathyroidectomy is the only cure and is recommended for patients demonstrating symptomatic disease and/or end organ damage. However, there may be a benefit to intervening before the development of complications. We sought to characterize institutional trends in the biochemical and symptomatic presentation of PHPT and the associated cure and complication rates. METHODS We performed a retrospective cohort study of 1087 patients undergoing parathyroidectomy for PHPT, evaluating patients at 2-year intervals between 2002 and 2019. We identified signs and symptoms of PHPT based on the 2016 American Association of Endocrine Surgery Guidelines. Trends were evaluated with Kruskal Wallis, Chi-square tests, and Fisher's exact tests. RESULTS Patients with PHPT are presenting with lower parathyroid hormone (P = 0.0001) and calcium (P = 0.001) in the current era. Parathyroidectomy is more commonly performed for borderline guideline concordant patients with osteopenia (40.2%) and modest calciuria (median 246 mg/dL/24 h). 93.7% are cured, with no difference over time or between groups by guideline concordance. CONCLUSIONS Parathyroidectomy is increasingly performed for patients who demonstrate modest bone and renal dysfunction. Patients experience excellent cure rates and rarely experience postoperative hypocalcemia, suggesting a role for broader surgical indications.
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Affiliation(s)
- Lauren N Krumeich
- Department for Surgery, University of Michigan, Ann Arbor, Michigan; Department for Surgery, University of Michigan Medical School, Ann Arbor, Michigan.
| | - Angelica Santos
- Department for Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Douglas L Fraker
- Department for Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Rachel R Kelz
- Department for Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Heather Wachtel
- Department for Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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Yankova I, Lilova L, Petrova D, Dimitrova I, Stoynova M, Shinkov A, Kovatcheva R. Biochemical characteristics and clinical manifestation of normocalcemic primary hyperparathyroidism. Endocrine 2024:10.1007/s12020-024-03768-6. [PMID: 38489132 DOI: 10.1007/s12020-024-03768-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/29/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Normocalcemic primary hyperparathyroidism (nPHPT) is a condition characterized by persistently high levels of parathyroid hormone (PTH) and normal serum calcium levels in the absence of other causes for secondary hyperparathyroidism. The aim of the present study was to assess the clinical presentation and the biochemical characteristics in patients with nPHPT and to compare them with those in patients with hypercalcemic PHPT (hPHPT). MATERIALS AND METHODS The study included 316 patients (277 women and 39 men, average age 58.7 ± 12.1) diagnosed with PHPT. Total serum calcium, inorganic phosphates (PO4), PTH, urinary Ca (uCa), albumin, creatinine, 25(OH)D and bone markers (b-CTX and ALP) were examined in all of them. BMD of the lumbar spine (LS), distal third of the radius (DR), femoral neck (FN) and total proximal femur (TF) were measured by a dual-energy X-ray absorptiometry (DXA). The patients were divided into two groups according to albumin-corrected calcium (Ca) level - with hPHPT (Ca>2.62 mmol/L) and with nPHPT (Ca 2.12-2.62 mmol/l), without other causes for secondary hyperparathyroidism. RESULTS The frequency of nPHPT was 15.2%. Normocalcemic patients had lower levels of PTH, higher PO4 and 25(OH)D, and smaller parathyroid adenomas. No significant difference in the frequency of osteoporosis, low-energy fractures, nephrolithiasis and gastrointestinal disorders was found between nPHPT and hPHPT. There was no difference in BMD between the two groups. CONCLUSION The patients with nPHPT show a more favorable biochemical profile compared to those with hPHPT. Nevertheless, clinical manifestations and complications are similar, without a significant difference in the frequency of osteoporosis, nephrolithiasis, gastrointestinal disorders and low-energy fractures.
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Affiliation(s)
- Inna Yankova
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria.
| | - Lora Lilova
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
| | - Daniela Petrova
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
| | - Inna Dimitrova
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
| | - Mariya Stoynova
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
| | - Alexander Shinkov
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
| | - Roussanka Kovatcheva
- Department of Endocrinology, Medical University Sofia, University Hospital of Endocrinology "Acad. Ivan Penchev", Sofia, Bulgaria
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Frye CC, Sanka SA, Sullivan J, Brunt LM, Gillanders WE, Pandian T, Brown TC. Analysis of Preoperative Predictors of Single and Multigland Primary Hyperparathyroidism. J Surg Res 2023; 288:148-156. [PMID: 36966595 DOI: 10.1016/j.jss.2023.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 02/05/2023] [Accepted: 02/19/2023] [Indexed: 04/03/2023]
Abstract
INTRODUCTION Preoperative differentiation of single-gland (SG) versus multigland (MG) primary hyperparathyroidism (PHPT) can assist with surgical planning, treatment prognostication, and patient counseling. The aim of this study was to identify preoperative predictors of SG-PHPT. METHODS Retrospective analysis of 408 patients with PHPT who underwent parathyroidectomy at a tertiary referral center. Comprehensive preoperative parameters, including demographic, laboratory, clinical, and imaging results were analyzed. Univariate analysis and binary logistic regression identified preoperative predictors of SG-PHPT. Receiver operator curves were used to analyze the predictive values of existing and novel preoperative predictive models. RESULTS Elevated parathyroid hormone (PTH) (99.1 pg/mL in SG versus 93.0 pg/mL in MG), elevated calcium (10.8 mg/dL in SG versus 10.6 mg/dL in MG), lower phosphate levels (2.80 mg/dL in SG versus 2.95 mg/dL in MG), and positive imaging (ultrasound 75.6% in SG versus 56.5% in MG; sestamibi 70.8% in SG versus 45.5% in MG) were significantly associated with SG-PHPT. The Washington University Score (a predictive scoring system made from calcium, PTH, phosphate, ultrasound, and sestamibi) and the Washington University Index ([calcium × PTH]/phosphate) were comparable to previous scoring systems used to predict SG versus MG-PHPT. CONCLUSIONS The association of lower phosphate with SG-PHPT is a novel finding. Previously identified predictors of SG-PHPT, including elevated PTH and positive imaging were confirmed. The Washington University Score and Index are comparable to previously described models and can be used to help surgeons predict if a patient may have SG versus MG-PHPT.
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The difficult parathyroid: advice to find elusive gland(s) and avoid or navigate reoperation. Curr Probl Surg 2023; 60:101262. [PMID: 36894218 DOI: 10.1016/j.cpsurg.2022.101262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Krumeich LN, Finn CB, Fraker DL, Kelz RR, Wachtel H. How low is too low? Intraoperative parathyroid hormone decline in normohormonal primary hyperparathyroidism. Surgery 2023; 173:166-172. [PMID: 36266124 DOI: 10.1016/j.surg.2022.06.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/20/2022] [Accepted: 06/14/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND In normohormonal primary hyperparathyroidism, parathyroid hormone levels are normal but inappropriately elevated for the degree of hypercalcemia. The study goals were to determine intraoperative parathyroid hormone parameters predictive of (1) cure and (2) hypocalcemia in this subgroup. METHODS We performed a retrospective cohort study comparing patients who underwent parathyroidectomy (2002-2019) for normohormonal and classic primary hyperparathyroidism. The primary outcomes were cure (calcium <10.3 mg/dL) and hypocalcemia (≤8.4 mg/dL) ≥6 months postoperatively. RESULTS In the study, 127 of 1,087 patients (11.7%) had normohormonal primary hyperparathyroidism. The groups experienced similar rates of cure (91.3% vs 94.1%, P = .23) and hypocalcemia (3.9% vs 2.9%, P = .53). However, intraoperative parathyroid hormone decline in cured patients was lower in those with normohormonal primary hyperparathyroidism (66.4% vs 84.5%, P < .0001). Receiver operating characteristic curves provided Youden's indices of 52% and 75% (cure) and 75% and 88% (hypocalcemia) for patients with normohormonal and classic primary hyperparathyroidism, respectively. Cure rates with ≥50% intraoperative parathyroid hormone decline were similar (94.1% vs 95.0%, P = .72), but hypocalcemia was more prevalent in patients with normohormonal primary hyperparathyroidism and ≥70% intraoperative parathyroid hormone decline (10.4% vs 3.3%, P = .01). CONCLUSION In patients with normohormonal primary hyperparathyroidism, intraoperative parathyroid hormone declines of ≥50% and ≥70% were predictive of postoperative cure and hypocalcemia, respectively. These parameters may inform intraoperative decision making and postoperative management.
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Affiliation(s)
- Lauren N Krumeich
- Department of Surgery, Hospital of the University of Pennsylvania, University of Pennsylvania, Philadelphia, PA.
| | - Caitlin B Finn
- Weill Cornell Medicine, New York-Presbyterian Hospital, New York, NY
| | - Douglas L Fraker
- Department of Surgery, Hospital of the University of Pennsylvania, University of Pennsylvania, Philadelphia, PA
| | - Rachel R Kelz
- Department of Surgery, Hospital of the University of Pennsylvania, University of Pennsylvania, Philadelphia, PA
| | - Heather Wachtel
- Department of Surgery, Hospital of the University of Pennsylvania, University of Pennsylvania, Philadelphia, PA
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Phenotypes of primary hyperparathyroidism: Does parathyroidectomy improve clinical outcomes for all? Surgery 2023; 173:173-179. [PMID: 36244815 DOI: 10.1016/j.surg.2022.05.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Primary hyperparathyroidism consists of 3 biochemical phenotypes: classic, normocalcemic, and normohormonal primary hyperparathyroidism. The clinical outcomes of patients with normocalcemic primary hyperparathyroidism and normohormonal primary hyperparathyroidism are not well described. METHOD A retrospective review of patients who underwent parathyroidectomy at a single institution was performed. A logistical regression analysis of postoperative nephrolithiasis and highest percentage change in dual-energy x-ray absorptiometry scan comparison using Kruskal-Wallis test and Cox proportional hazard analysis of recurrence-free survival were performed. RESULTS A total of 421 patients were included (340 classic, 39 normocalcemic primary hyperparathyroidism, 42 normohormonal primary hyperparathyroidism). Median follow-up was 8.8 months (range 0-126). Higher rates of multigland disease were seen in normocalcemic primary hyperparathyroidism (64.1%) and normohormonal primary hyperparathyroidism (56.1%) compared to the classic (25.8%), P < .001. There were no differences in postoperative complications. The largest percentage increases in bone mineral density at the first postoperative dual-energy x-ray absorptiometry scan were higher for classic (mean ± SD, 6.4 ± 9.1) and normocalcemic primary hyperparathyroidism (4.8 ± 11.9) compared to normohormonal primary hyperparathyroidism, which remained stable (0.2 ± 14.2). Normocalcemic primary hyperparathyroidism were more likely to experience nephrolithiasis postoperatively, 6/13 (46.2%) compared to 11/68 (16.2%) classic, and 2/13 (15.4%) normohormonal primary hyperparathyroidism, P = .0429. Normocalcemic primary hyperparathyroidism was the only univariate predictor of postoperative nephrolithiasis recurrence (odds ratio [95% confidence interval] 4.44 [1.25-15.77], P = .029). Normocalcemic primary hyperparathyroidism was significantly associated with persistent disease with 6/32 (18.8%) compared to 1/36 (2.8%) and 3/252 (1.2%) in normohormonal primary hyperparathyroidism and classic (P < .001). CONCLUSION Three phenotypes of primary hyperparathyroidism are distinct clinical entities. Normocalcemic primary hyperparathyroidism had higher incidence of persistent disease and postoperative nephrolithiasis but demonstrated improvements in postoperative bone density. These data should inform preoperative discussions with patients with normocalcemic primary hyperparathyroidism and normohormonal primary hyperparathyroidism regarding postoperative expectations.
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Islam AK. Advances in the diagnosis and the management of primary hyperparathyroidism. Ther Adv Chronic Dis 2021; 12:20406223211015965. [PMID: 34178298 PMCID: PMC8202248 DOI: 10.1177/20406223211015965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 04/20/2021] [Indexed: 12/26/2022] Open
Abstract
The parathyroid glands, one of the last organs to be discovered, are responsible for maintaining calcium homeostasis, and they continue to present the clinician with diagnostic and management challenges that are reviewed herein. Primary hyperparathyroidism (PHPT) comprises the vast majority of pathology of the parathyroid glands. The classic variant, presenting with elevated calcium and parathyroid hormone levels, has been studied extensively, but the current body of literature has added to our understanding of normocalcemic and normohormonal variants of PHPT, as well as syndromic forms of PHPT. All variants can lead to bone loss, kidney stones, declining renal function, and a variety of neurocognitive, gastrointestinal, and musculoskeletal complaints, although the majority of PHPT today is asymptomatic. Surgery remains the definitive treatment for PHPT, and advances in screening, evolving indications for surgery, new imaging modalities, and improvements in intra-operative methods have greatly changed the landscape. Surgery continues to produce excellent results in the hands of an experienced parathyroid surgeon. For those patients who are not candidates for surgery, therapeutic advances in medical management allow for improved control of the hypercalcemic state. Parathyroid cancer is extremely rare; the diagnosis is often made intra-operatively or on final pathology, and recurrence is common. The mainstay of treatment is normalization of serum calcium via surgery and medical adjuncts.
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Affiliation(s)
- Ana Kashfia Islam
- Department of Surgery, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9159, USA
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