Abstract
Introduction
Juvenile primary hyperparathyroidism is uncommon and more symptomatic than the adult counterpart. The aim of this prospective monocentric study, conducted in a tertiary referral center, was to evaluate the clinical, biochemical, and densitometric data, and the outcome of a series of patients with juvenile primary hyperparathyroidism.
Material and Methods
The study group included 154 patients with sporadic and familial juvenile primary hyperparathyroidism, aged ≤40 years. Relative frequency of sporadic and familial forms, comparison of the clinical and biochemical characteristics, rate of cure after parathyroidectomy and the outcome of patients not undergoing surgery were evaluated.
Results
Familial cases (n = 42) were younger, less frequently females, and had milder disease compared to sporadic cases (n = 112). No difference was observed in biochemical and densitometric parameters. Among patients undergoing parathyroidectomy (n = 116), familial cases had a higher rate of multigland disease and a higher persistence/relapse rate compared to sporadic cases (73 vs. 3.6% and 48.1 vs. 5.7%, respectively). Patients who did not undergo parathyroidectomy had stable clinical, biochemical, and densitometric parameters during follow-up (median 27 months). Using the cut-off age of 25 years, there was no difference in clinical, biochemical and densitometric parameters between younger and older patients, with the exception of parathyroid hormone and phosphate, which were significantly lower and higher, respectively, in patients <25 years.
Conclusions
In conclusion, this prospective study shows that juvenile primary hyperparathyroidism is frequently a sporadic disease, with no difference in the biochemical phenotype between sporadic and familial forms. Patients with familial juvenile primary hyperparathyroidism have a milder clinical phenotype and higher rate of persistence/recurrence after PTx than those with sporadic juvenile primary hyperparathyroidism.
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Acknowledgements
We thank Dr. Giuseppe Viccica for his work collecting some clinical data used in this study.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Saponaro, F., Marcocci, C., Cacciatore, F. et al. Clinical profile of juvenile primary hyperparathyroidism: a prospective study. Endocrine 59, 344–352 (2018). https://doi.org/10.1007/s12020-017-1318-1
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DOI: https://doi.org/10.1007/s12020-017-1318-1