{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T00:06:34Z","timestamp":1776211594802,"version":"3.50.1"},"reference-count":35,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T00:00:00Z","timestamp":1776124800000},"content-version":"vor","delay-in-days":13,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["AJP Rep"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>To describe a rare case of late-onset neonatal hypocalcemia in a very preterm infant caused by maternal adenoma-related hyperparathyroidism (HyperPT) and to discuss diagnostic and therapeutic implications.<\/jats:p>\n                  <jats:p>Case report of a preterm infant born at 29 weeks of gestation with very low birth weight. Clinical course, laboratory findings, maternal history, and management were reviewed to identify the etiology and guide treatment.<\/jats:p>\n                  <jats:p>The infant developed transient, asymptomatic hypocalcemia during the neonatal period. Maternal evaluation revealed primary HyperPT due to a parathyroid adenoma as the underlying cause. The newborn responded to calcium supplementation and optimized vitamin D therapy.<\/jats:p>\n                  <jats:p>Maternal HyperPT can cause delayed neonatal hypocalcemia even in preterm infants. Early recognition through coordinated maternal\u2013neonatal evaluation is crucial. Optimal vitamin D administration and close interdisciplinary communication between obstetrics and neonatology are essential for prevention and management.<\/jats:p>","DOI":"10.1055\/a-2837-6826","type":"journal-article","created":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T23:22:12Z","timestamp":1776208932000},"page":"e83-e89","source":"Crossref","is-referenced-by-count":0,"title":["Late-Onset Hypoparathyroidism-Induced Hypocalcemia in a Very Low Birth Weight Infant Caused by Undiagnosed Maternal Hyperparathyroidism"],"prefix":"10.1055","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-6787-924X","authenticated-orcid":false,"given":"Arne","family":"Beyer","sequence":"additional","affiliation":[{"name":"Universit\u00e4tsklinikum M\u00fcnster, P\u00e4diatrische Kardiologie, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meike","family":"Franssen","sequence":"additional","affiliation":[{"name":"St. Franziskus-Hospital M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai","family":"B\u00f6ckenholt","sequence":"additional","affiliation":[{"name":"St. Franziskus-Hospital M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonas","family":"Rohde","sequence":"additional","affiliation":[{"name":"St. Franziskus-Hospital M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ester","family":"Domning","sequence":"additional","affiliation":[{"name":"St. Franziskus-Hospital M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Florian","family":"Schneider","sequence":"additional","affiliation":[{"name":"St. Franziskus-Hospital M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"},{"name":"Universit\u00e4tsklinikum M\u00fcnster, Klinik f\u00fcr Kinder- und Jugendmedizin, M\u00fcnster, North Rhine-Westphalia, Deutschland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2026,4,14]]},"reference":[{"key":"ref1","volume-title":"Pediatric Reference Intervals","author":"S J Soldin","year":"2007"},{"issue":"06","key":"ref2","doi-asserted-by":"crossref","first-page":"986","DOI":"10.1210\/jcem-46-6-986","article-title":"Failure of total calcium corrected for protein, albumin, and pH to correctly assess free calcium status","volume":"46","author":"J H Ladenson","year":"1978","journal-title":"J Clin Endocrinol 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