Primary hyperparathyroidism in infants. Diagnostic and therapeutic difficulties

Area of Science:

• Pediatric Endocrinology
• Medical Genetics
• Nephrology

Background:

• Congenital primary hyperparathyroidism (pHPT) is a rare autosomal disorder.
• It typically presents with diffuse hyperplasia of all parathyroid glands.
• The exact etiology of congenital pHPT remains unclear, though gene mutations are suspected.

Observation:

• This study discusses challenges in early diagnosis and laboratory interpretation for 3 infants with congenital pHPT.
• Key observations include the absence of increased renal echogenicity and hypercalciuria, unlike in idiopathic hypercalcemia.
• These findings contrast with secondary hyperparathyroidism, often seen in patients with prolonged hypocalcemia.

Findings:

• Congenital pHPT diagnosis can be complicated by atypical laboratory results.
• The absence of specific renal and urinary markers differentiates it from other hypercalcemic conditions.
• Molecular genetic studies suggest a potential role for gene mutations in parathyroid adenoma development.

Implications:

• Improved diagnostic criteria are needed for early and accurate identification of congenital pHPT in neonates.
• Understanding the genetic basis may lead to targeted therapies.
• Timely diagnosis and management are essential for infant health outcomes.