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CONGENITAL HYPERPARATHYROIDISM AND VITAMIN D DEFICIENCY SECONDARY TO MATERNAL HYPOPARATHYROIDISM
Author(s) -
SANN L.,
DAVID L.,
THOMAS A.,
FREDERICH A.,
CHAPUY M. C.,
FRANCOIS R.
Publication year - 1976
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1976.tb04901.x
Subject(s) - medicine , hypoparathyroidism , secondary hyperparathyroidism , endocrinology , hyperparathyroidism , vitamin d and neurology , vitamin d deficiency , vitamin , parathyroid hormone , calcium
. A new case of congenital hyperparathyroidism secondary to maternal hypoparathyroidism is described. Neonatal roentgenograms of the skeleton showed severe bone demineralisation and the distal metaphyses of the long bones were spread, frayed and cupped. Elevated levels of serum immunoreactive parathormone (iPTH) were found at the age of 41 days=270 μlEq/ml (Normal: <50 μlEq/ml). A very low plasma 25‐OH‐D concentration (<4 ng/ml) was found at the same time in spite of previous administration of 600 units of vitamin D every day for 18 days and in spite of healing of the bone lesions. At the age of 3 months, 15 mg of vitamin D was given orally: iPTH levels which remainded high 3 weeks before (210 μlEq/ml) were found to be normal one week after this vitamin D load (37 μlEq/ml). It is suggested that in congenital hyperparathyroidism secondary to maternal hypoparathyroidism, hyperparathyroidism increases the infants needs for vitamin D. This could result in a state of vitamin D deficiency which in turn would maintain the parathyroid hyperactivity.