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[Primary hyperparathyroidism revealed by pseudomyopathia]
B Guérin1, R Boumpoutou, M Bastin
1Service de pédiatrie et réanimation pédiatrique, 4, boulevard Hauterive, 64046 Pau Cedex. benedicte.guerin@ch-pau.fr
Annales D'Endocrinologie
|June 17, 2005
Summary
This case study highlights primary hyperparathyroidism in a child presenting with muscle pain and weakness. Early diagnosis and treatment, including surgery, resolved the phosphocalcium imbalance and improved symptoms.
Area of Science:
- Pediatric Endocrinology
- Neuromuscular Disorders
- Skeletal Dysplasias
Background:
- Delayed development and appendicitis in an 11-year-old boy preceded neuromuscular symptoms.
- Initial investigations including blood tests, MRI, and EMG were inconclusive for muscle disease.
Observation:
- The child developed exercise-induced lower limb muscle pain, difficulty with mobility, and increased reflex activity.
- Worsening myopathy gait and hyperlordosis prompted further investigation.
- Subsequent tests revealed hypercalcemia, hypercalciuria, and hypophosphatemia.
Findings:
- Primary hyperparathyroidism was diagnosed due to persistently high serum calcium and abnormal parathormone levels.
- Pathology confirmed principal cell hyperplasia of the parathyroid glands.
- Genetic testing for MEN1/MEN2a and the menine gene showed no mutations.
Implications:
- This case underscores the importance of considering endocrine disorders, particularly primary hyperparathyroidism, in pediatric patients with unexplained muscle dysfunction.
- Abnormal phosphocalcium regulation can manifest as significant neuromuscular symptoms.
- Surgical parathyroidectomy effectively normalized biochemical parameters and improved clinical outcomes.