Posterior reversible encephalopathy syndrome and parkinsonism as the first manifestation of primary hyperparathyroidism - a report of two cases.

Hypercalcemia Parkinsonism Posterior reversible encephalopathy syndrome Primary hyperparathyroidism

Journal

Endocrine
ISSN: 1559-0100
Titre abrégé: Endocrine
Pays: United States
ID NLM: 9434444

Informations de publication

Date de publication:
18 Sep 2024
Historique:
received: 12 06 2024
accepted: 11 09 2024
medline: 18 9 2024
pubmed: 18 9 2024
entrez: 18 9 2024
Statut: aheadofprint

Résumé

Primary hyperparathyroidism (PHPT) may be asymptomatic or present with renal calculi, secondary osteoporosis, fractures and neuropsychiatric manifestations. Posterior reversible encephalopathy syndrome (PRES) and parkinsonism are atypical manifestations that may be rarely associated with PHPT. We report two patients who presented with the conditions mentioned above. The first patient involved a 38-year-old woman who presented with diminution of vision, seizures, altered behavior and hypertension over eight months. An MRI of the brain done had shown vasogenic edema involving the parieto-occipital regions, suggestive of PRES. A metabolic screen revealed PTH-dependent hypercalcemia that was localized to the left inferior parathyroid gland. Following focused parathyroidectomy, there was improvement in sensorium, vision and normalization of blood pressure. The second patient was of a 74-year-old man who presented with progressive extrapyramidal symptoms of gait abnormalities and rigidity since the past eight months. He was initiated on Selegeline and Levodopa for the same purpose, and subsequently reported minimal improvement in symptoms. Investigations revealed PHPT associated with a right inferior parathyroid adenoma. Within two weeks following surgery, there was an improvement in rigidity and gait and he was able to ambulate without support. PRES has been reported to occur in the context of preeclampsia, hypertension, infection, sepsis and autoimmune conditions. PRES associated with hypercalcemia is rarely reported. While extra-pyramidally related manifestations are described in hypoparathyroidism, PHPT related parkinsonism is not commonly encountered. Identifying the underlying aetiology and initiation of corrective measures may lead to amelioration of patient symptomatology. The occurrence of PRES and parkinsonism is rare in primary hyperparathyroidism; the two patients described above highlight the importance of screening for hypercalcemia in the setting of neurological manifestations.

Sections du résumé

BACKGROUND/OBJECTIVE OBJECTIVE
Primary hyperparathyroidism (PHPT) may be asymptomatic or present with renal calculi, secondary osteoporosis, fractures and neuropsychiatric manifestations. Posterior reversible encephalopathy syndrome (PRES) and parkinsonism are atypical manifestations that may be rarely associated with PHPT. We report two patients who presented with the conditions mentioned above.
CASE REPORT METHODS
The first patient involved a 38-year-old woman who presented with diminution of vision, seizures, altered behavior and hypertension over eight months. An MRI of the brain done had shown vasogenic edema involving the parieto-occipital regions, suggestive of PRES. A metabolic screen revealed PTH-dependent hypercalcemia that was localized to the left inferior parathyroid gland. Following focused parathyroidectomy, there was improvement in sensorium, vision and normalization of blood pressure. The second patient was of a 74-year-old man who presented with progressive extrapyramidal symptoms of gait abnormalities and rigidity since the past eight months. He was initiated on Selegeline and Levodopa for the same purpose, and subsequently reported minimal improvement in symptoms. Investigations revealed PHPT associated with a right inferior parathyroid adenoma. Within two weeks following surgery, there was an improvement in rigidity and gait and he was able to ambulate without support.
DISCUSSION CONCLUSIONS
PRES has been reported to occur in the context of preeclampsia, hypertension, infection, sepsis and autoimmune conditions. PRES associated with hypercalcemia is rarely reported. While extra-pyramidally related manifestations are described in hypoparathyroidism, PHPT related parkinsonism is not commonly encountered. Identifying the underlying aetiology and initiation of corrective measures may lead to amelioration of patient symptomatology.
CONCLUSION CONCLUSIONS
The occurrence of PRES and parkinsonism is rare in primary hyperparathyroidism; the two patients described above highlight the importance of screening for hypercalcemia in the setting of neurological manifestations.

Identifiants

pubmed: 39292367
doi: 10.1007/s12020-024-04041-6
pii: 10.1007/s12020-024-04041-6
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Informations de copyright

© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

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Auteurs

Sindhu Sree Rallapalli (SS)

Departments of Endocrinology, Christian Medical College, Vellore, 632004, India.

Murali Rayani (M)

Departments of Neurology, Christian Medical College, Vellore, 632004, India.

George Abraham Ninan (GA)

Departments of Neurology, Christian Medical College, Vellore, 632004, India.

Mohammed Anwar Hussain (MA)

Departments of Endocrinology, Christian Medical College, Vellore, 632004, India.

Aditya V Nair (AV)

Departments of Neurology, Christian Medical College, Vellore, 632004, India.

Deepti Bal (D)

Departments of Neurology, Christian Medical College, Vellore, 632004, India.

Kripa Elizabeth Cherian (KE)

Departments of Endocrinology, Christian Medical College, Vellore, 632004, India. kripaec@gmail.com.

A T Prabhakar (AT)

Departments of Neurology, Christian Medical College, Vellore, 632004, India.

Thomas V Paul (TV)

Departments of Endocrinology, Christian Medical College, Vellore, 632004, India.

Nihal Thomas (N)

Departments of Endocrinology, Christian Medical College, Vellore, 632004, India.

Classifications MeSH