Hypophosphatasia in adults. Apropos of 2 cases
Abstract
Two very dissimilar cases of hypophosphatemia in the adult patient are described by the authors. The first case was symptomatic since childhood, with typical clinical and radiologic findings (fissures, diaphyseal bone spurs, bony deformities), whereas the second case was minimally symptomatic (loss of teeth and back pain). Articular chondrocalcinosis was observed in both cases, as was a decrease in alkaline phosphatase and the increased urinary excretion of phosphoethanolamine. Histological examination demonstrated an increase in osteoid. Review of the literature revealed 40 cases of this inborn error of metabolism seen in adulthood, enabling a detailed description of the characteristics of this polymorphic condition.
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Evidence Hub reads this as a case report, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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