PRE-OPERATIVE LOCALIZATION OF HYPERFUNCTIONING PARATHYROID TISSUE BY PARATHYROID SCINTIGRAPHY

1976 ◽  
Vol 81 (2) ◽  
pp. 298-309 ◽  
Author(s):  
P. Burckhardt ◽  
A. Bischof-Delaloye ◽  
B. Ruedi ◽  
B. Delaloye
Keyword(s):  
Primary Hyperparathyroidism ◽  
False Positive ◽  
Parathyroid Tissue ◽  
Tubular Reabsorption ◽  
Plasma Calcium ◽  
Parathyroid Scintigraphy ◽  
Biochemical Screening ◽  
Parathyroid Adenomas ◽  
Positive Results ◽  
Positive Focus

ABSTRACT In 22 patients who underwent surgery suspected of primary hyperparathyroidism, the surgical findings were compared with the results obtained by pre-operative parathyroid scanning and biochemical screening. Thirteen of 15 parathyroid adenomas were localized by pre-operative scanning, but in five of them a false positive focus was also described. The technique was less useful in primary hyperplasia. Comparable results were reported by other investigators. In both instances the best results were obtained in patients with high parathyroid activity as measured by plasma calcium, plasma alkaline phosphatase and tubular reabsorption of phosphorus (TRP). Parathyroid scintigraphy was especially helpful in the presence of ectopic adenomas and in patients who had undergone previous parathyroid surgery. Unfortunately, the possibility of false positive results makes it unreliable for the diagnosis of primary hyperparathyroidism.

scholarly journals SAT-LB65 A Rare Existence

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Jiselle Aimee Yaplito Bedia ◽  
Maria Honolina S Gomez
Keyword(s):  
Primary Hyperparathyroidism ◽  
Parathyroid Adenoma ◽  
Clinical Presentation ◽  
Renal Involvement ◽  
Preoperative Imaging ◽  
Biochemical Screening ◽  
Central Target ◽  
Target Organs ◽  
Postoperative Hypoparathyroidism ◽  
Parathyroid Adenomas

Abstract Primary hyperparathyroidism is a common endocrine disorder of metabolism usually due to a parathyroid adenoma. Although, the clinical presentation of primary hyperparathyroidism has changed from Albright’s description of a disease of bones and stones, the central target organs affected by this disorder continue to be the skeleton and kidneys. With the advent of routine biochemical screening, the typical diagnosis of primary hyperparathyroidism is no longer accompanied by overt skeletal and renal involvement. Majority of the cases of primary hyperparathyroidism are due to parathyroid adenomas. Giant glands were defined as greater than the 95th percentile, characterized as glands weighing > 3.5 grams. This present case in a 54-year old female is a rare case of primary hyperparathyroidism secondary to a giant parathyroid adenoma measuring 10.7 x 8.0 x 40.0 cm and weighing 145 grams, the largest giant parathyroid adenoma reported to date, with co-existent silent thymoma, multinodular goiter and osteosclerosis of the vertebral spine, metaphorically known as the “rugger-jersey spine”. The association between thymoma and parathyroid adenoma is rare, and only 3 cases have been reported in the literature. We characterized the correlation of preoperative imaging, intraoperative location, and postoperative course, including significant postoperative hypoparathyroidism, as compared to other patients with PHPT to determine whether giant adenomas represent a clinical entity with distinct clinical characteristics. Keywords: primary hyperparathyroidism, giant parathyroid adenoma, rugger-jersey spine, thymoma Abbreviation PHPT Primary hyperparathyroidism

Results of ultrasonically guided percutaneous ethanol injection into parathyroid adenomas in primary hyperparathyroidism

1993 ◽  
Vol 129 (5) ◽  
pp. 381-387 ◽  
Author(s):  
Bruno L Vergès ◽  
Jean P Cercueil ◽  
Denis Jacob ◽  
Geneviève Vaillant ◽  
Jean M Brun ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Histopathological Examination ◽  
Alternative Therapy ◽  
Percutaneous Ethanol Injection ◽  
Plasma Calcium ◽  
Ethanol Injection ◽  
Parathyroid Adenomas ◽  
Calcium Phosphorus ◽  
Partial Success

Surgery is the usual treatment for primary hyperparathyroidism. However, some patients with high surgical risks are not suitable for surgery. For such patients, we propose, as an alternative treatment, ultrasonically guided percutaneous ethanol injection into parathyroid adenomas, in order to induce necrosis of the tumor. We report, here, the results of ultrasonically guided percutaneous ethanol injection into parathyroid adenomas, during a prolonged follow-up period up to 49 months, in a group of 13 patients (median age 79 years) with primary hyperparathyroidism and contraindications for surgery. In seven patients, complete normalization of plasma calcium, phosphorus and parathyroid hormone (PTH) levels was achieved after ethanol injections, with no recurrence of hypercalcemia during a median follow-up period of 28 months (total success). In these seven patients, plasma calcium, phosphorus and PTH levels were normalized 48 h after the successful ethanol injection. In four patients, a partial success was obtained with clinical improvement and normalization of plasma calcium levels but without complete normalization of plasma PTH levels. This partial success is due to incomplete necrosis of the adenoma, as has been confirmed in one patient by histopathological examination. The ethanol injection treatment failed in only two patients. This treatment was always well tolerated and no major side-effects were observed. In conclusion, our results give evidence that ultrasonically guided percutaneous ethanol injection into parathyroid adenomas can be a very useful alternative therapy in patients not suitable for surgery.

scholarly journals Shear Wave Elastography in Patients with Primary and Secondary Hyperparathyroidism

2021 ◽  
Vol 10 (4) ◽  
pp. 697
Author(s):  
Daniela Amzar ◽  
Laura Cotoi ◽  
Ioan Sporea ◽  
Bogdan Timar ◽  
Oana Schiller ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Secondary Hyperparathyroidism ◽  
Shear Wave ◽  
Muscle Tissue ◽  
Parathyroid Tissue ◽  
Shear Wave Elastography ◽  
The Other ◽  
Cutoff Value ◽  
Helpful Tool ◽  
Parathyroid Adenomas

Objectives: In this study, we aim to determine the elastographic characteristics of both primary and secondary hyperparathyroidism using shear wave elastography. We also aim to evaluate the elastographic differences between them, as well as the differences between the parathyroid, thyroid, and muscle tissue, in order to better identify a cutoff value for the parathyroid tissue. Methods: In this prospective study, we examined a total of 68 patients with hyperparathyroidism, divided into two groups; one group consisted of 27 patients with primary hyperparathyroidism and the other group consisted of 41 selected patients with confirmed secondary hyperparathyroidism. The elasticity index (EI) was determined in the parathyroid, thyroid, and muscle tissue. The determined values were compared to better identify the parathyroid tissue. Results: The median value of mean SWE values measured for parathyroid adenomas from primary hyperparathyroidism was 4.86 kPa. For secondary hyperparathyroidism, the median value of mean SWE was 6.96 KPa. The median (range) presurgical values for parathormone (PTH) and calcium were 762.80 pg/mL (190, 1243) and 9.40 mg/dL (8.825, 10.20), respectively. We identified significant elastographic differences between the two groups (p < 0.001), which remained significant after adjusting elastographic measures to the nonparametric parameters, such as the parathormone value and vitamin D (p < 0.001). The cutoff values found for parathyroid adenoma were 5.96 kPa and for parathyroid tissue 9.58 kPa. Conclusions: Shear wave elastography is a helpful tool for identifying the parathyroid tissue, in both cases of primary and secondary hyperparathyroidism, as there are significant differences between the parathyroid, thyroid, and muscle tissue. We found a global cutoff value for the parathyroid tissue of 9.58 kPa, but we must keep in mind that there are significant elastographic differences between cutoffs for primary and secondary hyperparathyroidism.

Novel Criteria for Parathyroid Hormone Levels in Parathyroid Hormone–Guided Parathyroid Surgery

2007 ◽  
Vol 131 (12) ◽  
pp. 1800-1804
Author(s):  
Robert de Vos tot Nederveen Cappel ◽  
Nicole Bouvy ◽  
Wouter de Herder ◽  
Yolanda de Rijke ◽  
Hans van Toor ◽  
...  
Keyword(s):  
Parathyroid Hormone ◽  
Primary Hyperparathyroidism ◽  
False Positive ◽  
Parathyroid Surgery ◽  
Cure Rate ◽  
True Negative ◽  
Tertiary Hyperparathyroidism ◽  
Negative Results ◽  
Future Evaluation ◽  
Positive Results

Abstract Context.—Novel criteria for decrease of perioperative parathyroid hormone measurement may improve the accuracy of perioperative quick parathyroid hormone (qPTH)–guided parathyroidectomy. Objective.—To assess overall cure rate based on conventional criteria (50% decline of qPTH). Perioperative qPTH levels were evaluated to determine novel criteria for successful parathyroid surgery. Design.—Analysis of perioperative qPTH measurement findings of all consecutive patients undergoing parathyroidectomy for hyperparathyroidism (72 with primary hyperparathyroidism and 28 with secondary or tertiary hyperparathyroidism or multiple endocrine neoplasia I/IIa disease). Results.—Measurement of qPTH (based solely on the criterion of greater than 50% decline of parathyroid hormone) in 72 patients with primary hyperparathyroidism (77 procedures) showed true-positive results in 69, false-positive results in 4, and true-negative results in 4 procedures. In our series, false-positive and true-negative results were associated with high postexcision levels. However, when qPTH declines of greater than 70% and 80% were used in cases of postexcision qPTH levels of 100 to 200 ng/L and greater than 200 ng/L, respectively, no false-positive results were observed. Conclusions.—Through adherence to these novel criteria, reexploration of the neck could have been prevented in 29% of patients with primary hyperparathyroidism due to multiple gland disease. These novel criteria demand future evaluation to establish their value.

scholarly journals Preoperative localization of suspicious parathyroid adenomas by assay of parathyroid hormone in needle aspirates

1998 ◽  
pp. 72-77 ◽  
Author(s):  
C Marcocci ◽  
S Mazzeo ◽  
G Bruno-Bossio ◽  
A Picone ◽  
E Vignali ◽  
...  
Keyword(s):  
Parathyroid Hormone ◽  
Primary Hyperparathyroidism ◽  
Parathyroid Adenoma ◽  
Nodular Goiter ◽  
Neck Mass ◽  
Parathyroid Scintigraphy ◽  
Simple Method ◽  
Cervical Mass ◽  
Parathyroid Adenomas ◽  
Group 2

OBJECTIVE: To determine the usefulness of parathyroid hormone (PTH) measurement in needle aspirates of a suspicious neck mass to confirm its parathyroid nature in patients with primary hyperparathyroidism. METHODS: Thirty-three patients with surgically proved primary hyperparathyroidism were submitted to neck ultrasound (US), parathyroid scintigraphy, and assay of PTH in the aspirate (PTHa) of the suspicious cervical mass. RESULTS: Based on the results of neck US and parathyroid scintigraphy, patients were divided into two groups. Group 1: 16 patients (seven with nodular goiter) with concordant positive US and scintigraphic results. In all but one patient, PTHa was detectable and often markedly elevated (> 1000 pg in 12 patients, between 292 pg and 803 pg in three patients and 53 pg in one patient). The patient with undetectable PTHa had a small lower left parathyroid adenoma (8x8x10 mm). Group 2: 17 patients (12 with nodular goiter) with discordant US and scintigraphic results. PTHa established the parathyroid nature of the mass in 13 cases (> 1000 pg in 8 patients, between 501 pg and 953 pg in three patients and 90 and 79 pg in two patients): 11 of these had a suspected lesion by US examination but the scintigraphy results were negative; two had a mass that gave positive scintigraphy results but was of uncertain origin according to US: in both cases an intrathyroidal parathyroid adenoma was found. PTHa was undetectable in four cases (three with nodular goiter): all of these had equivocal US results, and three had positive scans and one a negative scan. CONCLUSIONS: Assay of PTHa is a simple method and should be useful for confirming the parathyroid nature of a cervical mass in patients with discordant or non-diagnostic US and scintigraphic results.

scholarly journals Type I Membrane Klotho Expression Is Decreased and Inversely Correlated to Serum Calcium in Primary Hyperparathyroidism

2008 ◽  
Vol 93 (10) ◽  
pp. 4152-4157 ◽  
Author(s):  
Peyman Björklund ◽  
Tijana Krajisnik ◽  
Göran Åkerström ◽  
Gunnar Westin ◽  
Tobias E. Larsson
Keyword(s):  
Primary Hyperparathyroidism ◽  
Mrna Expression ◽  
Serum Calcium ◽  
Fibroblast Growth Factor 23 ◽  
Parathyroid Tissue ◽  
Type I ◽  
Mrna Levels ◽  
Normal Tissues ◽  
Parathyroid Adenomas

Context: The type I membrane protein Klotho was recently shown to mediate PTH secretion in parathyroid cells in response to low extracellular calcium. In contrast, Klotho inhibits PTH secretion indirectly through the action of fibroblast growth factor-23. Abnormal Klotho expression in parathyroid disorders remains to be elucidated. Objective: The aim of the study was to determine: 1) Klotho expression in parathyroid adenomas from patients with primary hyperparathyroidism (pHPT) compared to normal tissue; and 2) its relation to the serum calcium and PTH levels. Design: Surgically removed parathyroid glands (n = 40) and four normal parathyroid tissue specimens were analyzed for Klotho mRNA and protein levels by quantitative real-time PCR and immunohistochemistry. In vitro effects of calcium on Klotho mRNA expression were studied in bovine parathyroid cells. Results: Klotho mRNA levels were significantly decreased (n = 23) or undetectable (n = 17) in parathyroid adenomas compared to normal tissues (P &lt; 0.001). Reduced Klotho protein expression was confirmed by immunohistochemistry. Klotho mRNA levels were inversely correlated to serum calcium (r = −0.97; P &lt; 0.0001), and calcium dose-dependently decreased Klotho mRNA expression in normal parathyroid cells in vitro (P &lt; 0.01). Serum calcium was the only significant marker of Klotho expression in multivariate analysis with calcium, phosphate, PTH, and adenoma weight as independent variables. Conclusions: Parathyroid Klotho expression is decreased or undetectable in pHPT. We provide evidence that 1) serum calcium is strongly associated with parathyroid Klotho expression in pHPT; and 2) abnormal PTH secretion in hypercalcemic pHPT subjects is mediated by Klotho-independent mechanisms.

scholarly journals Evaluation of the Radiological Findings of the Patints Having Surgical Intervention For The Primary Hyperparathyroidism

2021 ◽  
Author(s):  
Uğur Kalan ◽  
Ferhat Gökay
Keyword(s):  
Primary Hyperparathyroidism ◽  
Surgical Intervention ◽  
Demographic Data ◽  
Diagnostic Sensitivity ◽  
Histopathological Diagnosis ◽  
Dual Phase ◽  
Parathyroid Scintigraphy ◽  
Diagnostic Significance ◽  
Parathyroid Adenomas ◽  
Diagnostic Sensitivity And Specificity

Objective: In this study, we aimed to compare the results of ultrasonography and Tc-99m sestamibi dual phase parathyroid scintigraphy with postoperative pathology findings in patients with primary hyperparathyroidism. Methods: The study was carried out with 96 patients, who had surgical intervention for primary hyperparathyroidism and followed up in the Endocrinology and Metabolism Clinic, between January 2010-December 2015. Demographic data and preoperative laboratory results of the patients were reviewed. Diagnostic accuracy and compliance were calculated by comparing imaging methods with surgical localization and histopathological evaluation results. Results: Parathyroid adenomas were detected in 75, parathyroid hyperplasia in 12, and parathyroid carcinoma in 5 and suspect pathology results in 4 patients. The mean preoperative calcium (11.25 mg/dl) and parathormone (400.06 pg/ml) levels were determined. Ultrasonography had an estimated diagnostic sensitivity of 58.7% and a specificity of 38.5% in cases with parathyroid adenoma. It was observed that ultrasonography has not any diagnostic significance, and it is not in accordance with histopathological diagnosis (Kappa=-0.018, p=0.851). Diagnostic sensitivity, and specificity of scintigraphy were found to be 58.7%, and 38.5%, respectively. It was observed to be only fairly concordant, and significant according to histopathological diagnosis (Kappa=0.221, p=0.047). Conclusion: Tc-99m MIBI dual-phase parathyroid scintigraphy, a highly sensitive and noninvasive imaging technique, is clearly superior to the ultrasonography in detecting parathyroid adenomas and locating regions correctly.

Effect of Cellulose Phosphate and Dietary Calcium Restriction in Primary Hyperparathyroidism

1975 ◽  
Vol 49 (2) ◽  
pp. 91-98 ◽  
Author(s):  
A. M. Parfitt
Keyword(s):  
Primary Hyperparathyroidism ◽  
Urinary Calcium ◽  
Tubular Reabsorption ◽  
Plasma Calcium ◽  
Cation Binding ◽  
Published Data ◽  
Small Contribution ◽  
Bivalent Cation ◽  
Cellulose Phosphate ◽  
Low Calcium Diet

1. The bivalent cation-binding agent, cellulose phosphate, together with a low calcium diet was given for 6 days to nine patients with primary hyperparathyroidism subsequently verified at surgery. 2. Urinary calcium fell promptly by 8·4 mmol/24 h, and by 70%, and reached amounts below 4·0 mmol/24 h in five of the nine patients. The magnitude of fall may have been related to increased synthesis of vitamin D by the skin in a sub-tropical environment. Plasma magnesium fell steadily and urinary magnesium fell by 80%. 3. The plasma calcium showed two types of response. In five patients there was no significant change because a reduction in calcium load was offset by a further increase in the already high tubular reabsorption of calcium. In the remaining four patients, the tubular reabsorption of calcium was at a higher level initially and failed to increase further on the experimental regime, with a corresponding fall in plasma calcium. 4. The hypercalcaemia of primary hyperparathyroidism can be explained by increased gastrointestinal absorption and increased renal tubular reabsorption of calcium; net bone resorption makes only a small contribution but an additional factor dependent on the blood-bone equilibrium is not ruled out. 5. Comparison with other published data suggests that the fall in urinary calcium in response to a calcium-depleting regimen is prevented by concurrent depletion of inorganic phosphate and may be enhanced by concurrent depletion of magnesium. 6. Persistence of hypercalcaemia combined with an increase in tubular reabsorption of calcium in response to cellulose phosphate may be of diagnostic value in suspected primary hyperparathyroidism. 7. Cellulose phosphate may be of value in stone prevention in patients with primary hyperparathyroidism who are unsuitable for surgical treatment.

scholarly journals Autofluorescence pattern of parathyroid adenomas

BJS Open ◽  
2021 ◽  
Vol 5 (1) ◽  
Author(s):  
M S Demarchi ◽  
W Karenovics ◽  
B Bédat ◽  
C De Vito ◽  
F Triponez
Keyword(s):  
Parathyroid Hormone ◽  
Surgical Treatment ◽  
Primary Hyperparathyroidism ◽  
Parathyroid Adenoma ◽  
Sensitivity And Specificity ◽  
Near Infrared ◽  
Parathyroid Tissue ◽  
Endocrine Surgery ◽  
Parathyroid Adenomas ◽  
Tissue Sensitivity

Abstract Background Primary hyperparathyroidism (pHPT) is a common endocrine pathology, and it is due to a single parathyroid adenoma in 80–85 per cent of patients. Near-infrared autofluorescence (NIRAF) has recently been used in endocrine surgery to help in the identification of parathyroid tissue, although there is currently no consensus on whether this technique can differentiate between normal and abnormal parathyroid glands. The aim of this study was to describe the autofluorescence pattern of parathyroid adenoma in pHPT. Methods Between January and June 2019, patients with pHPT who underwent surgical treatment for parathyroid adenoma were enrolled. Parathyroid autofluorescence was measured. Results Twenty-three patients with histologically confirmed parathyroid adenomas were included. Parathyroid adenomas showed a heterogeneous fluorescence pattern, and a well defined autofluorescent ‘cap’ region was observed in 17 of 23 specimens. This region was on average 28 per cent more fluorescent than the rest of the adenoma, and corresponded to a rim of normal histological parathyroid tissue (sensitivity and specificity 88 and 67 per cent respectively). After resection, all patients were treated successfully, with normal postoperative values of calcium and parathyroid hormone documented. Conclusion Parathyroid adenomas show a heterogeneous autofluorescence pattern. Using NIRAF imaging, the majority of specimens showed a well defined autofluorescent portion corresponding to a rim of normal parathyroid tissue. Further studies should be conducted to validate these findings.

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