[Osteoporosis induced either by unfractionated heparin or by low molecular weight heparin]. / Ostéoporose induite soit par l'héparine non fractionnée soit par l'héparine de bas poids moléculaire.

Since the first suggestion of heparin-induced osteoporosis in 1963, a large body of work has been published. The mechanism can be explained by the effect of heparin as a cofactor for physiological stimulators of osteoclasts. Low-molecular weight heparins are an interesting alternative to non-fractionate heparin as the risk is reduced with an equivalent anticoagulation activity. Prevention is based on screening for patients at risk, preferential use of low-molecular weight heparins, early switch to anti-vitamin K and vitamin and calcium supplementation in pregnant women an elderly subjects. Curative treatment combines vitamin-calcium supplementation with inhibitors of bone resorption.

[Leri's melorheostosis. Apropos of 3 cases in children]. / La mélorhéostose de Léri. A propos de trois observations chez l'enfant.

Three pediatric cases of Leri's melorheostosis are reported. Growth disorders and deformities of the limbs are often the first signs in children. X ray shows areas of very opaque condensation of the long bones parallel to the main axis of the bones parallel to the main axis of the bone, and on the epiphyses, small dense and irregular islets. The course is benign but there may be orthopedic complications.

Leri's melorheostosis: three pediatric cases and a review of the literature.

Three pediatric cases of melorheostosis are described. Growth disorders of the limbs are often the first signs in children. The radiological appearance consists of long tracks of increased cortical radiodensity in the long bones and of small dense islets in the epiphyses.

[Fatal hyperparathyroidism]. / Les hyperparathyroïdies mortelles

Hyperparathyroidism is able to determine suddenly after a very poor clinical history a deep coma : in such a condition, the diagnosis with the paraneoplastic hypercalcemia may be a difficult one : cervicotomy can be the heroïc way to lead to diagnosis and in the same time to perform treatment. To avoid such a dramatic situation, the authors propose cervicotomy for every patient suspected of P.T.H. adenoma, when calcemia is higher than 115 mg c/l, even if the symptoms are very slight or nil.

[Phospho-calcium metabolism after operation for hyperthyroidism]. / Le métabolisme phospho-calcique après opération pour hyperparathyroïdisme

Study of data concerning calcium and phosphorus after removal of an adenoma in 60 cases of primary hyperparathyroidism, showed that serum calcium levels always fall. Serum phosphorus usually rises, but not always. There is a fall in urinary calcium in cases which previously had increased calcium in the urine. Phosphorus in the urine falls, but in a variable manner. The authors discuss the role of bony lesions and renal failure.