Shwachman-Diamond syndrome physical examination

The main characteristics of the syndrome are exocrine pancreatic dysfunction, haematologic abnormalities and growth retardation. Neutropenia may be intermittent or persistent and is the most common haematological finding. More than 50% of patients are below the third percentile for height, and short stature appears to be unrelated to nutritional status. Other skeletal abnormalities include metaphyseal dysostosis (45% of patients), thoracic dystrophy (rib cage abnormalities in 46% of patients), and costochondral thickening (shortened ribs with flared ends in 32% of patients). Skeletal problems are one of the most variable components of SDS, with 50% affected siblings from the same family discordant for clinical presentation or type of abnormality. Despite this, a careful review of radiographs from 15 patients indicated that all of them had at least one skeletal anomaly, though many were sub-clinical.

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