Endocrine function in sclerosteosis.
Sclerosteosis is a rare autosomal recessive condition which is characterized by excessive skeletal overgrowth, distortion of the facies, cranial nerve abnormalities and raised intracranial pressure. Syndactyly and digital malformation are associated features. Radiological examination reveals thickened sclerotic bone maximally involving the skull, including the pituitary fossa. Sclerosis and hyperostosis are present throughout the skeleton. Biochemical and endocrine tests were carred out on 3 patients with sclerosteosis in an attempt to detect any dysfunction of calcium regulation of the pituitary. Results revealed no abnormality of basal parathyroid or calcitonin secretion. Histological examination revealed quantitatively increased bone resorption in comparison with normal subjects, although the pattern resembled osteosclerosis. Regulation of growth hormone, adrenocorticotrophin, gonadotrophin and thyrotrophin function were intact. We conclude that pituitary function and calcium 'homeostasis' are normal in this disorder.[1]References
- Endocrine function in sclerosteosis. Epstein, S., Hamersma, H., Beighton, P. S. Afr. Med. J. (1979) [Pubmed]
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