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Ectopic calcification as discernible manifestation in neonates with pseudohypoparathyroidism type 1a

Masanori Adachi1, Koji Muroya, Yumi Asakura

  • 1Department of Endocrinology & Metabolism, Clinical Research Institute, Kanagawa Children's Medical Center, Yokohama 232-8555, Japan.

International Journal of Endocrinology
|December 17, 2009
PubMed

Insights

Pseudohypoparathyroidism type 1a (PHP1a) diagnosis is difficult as symptoms appear later in life. This study reports subcutaneous calcification in the neonatal period, an early sign of PHP1a.

Area of Science:

  • Endocrinology
  • Genetics
  • Pediatrics

Background:

  • Pseudohypoparathyroidism type 1a (PHP1a) diagnosis is often delayed due to the late onset of characteristic symptoms like osteodystrophy and hypocalcemia.
  • Ectopic calcification is a potential early indicator of PHP1a, but its timing is not well-documented.

Observation:

  • This report details two patients diagnosed with PHP1a who exhibited subcutaneous calcification during the neonatal period.
  • Neonatal subcutaneous calcification was observed as an early clinical manifestation.

Findings:

  • Subcutaneous calcification can manifest in the neonatal period in patients with pseudohypoparathyroidism type 1a.
  • This finding suggests ectopic calcification may be an earlier sign than previously recognized.

Implications:

  • Early identification of PHP1a through neonatal calcification may allow for timely intervention.
  • Further systematic reviews are needed to confirm the prevalence and significance of neonatal ectopic calcification in PHP1a.

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