Helvetica paediatrica acta
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Twenty-eight children were diagnosed as having dermatomyositis (DM) on the basis of the criteria of Bohan and Peter. Ten of the 28 children developed calcinosis. ⋯ It persisted for a long time beyond the remission of the active muscle symptoms without tendency to spontaneous resolution. Long-term follow-up data substantiate calcinosis as the most frequent and the most serious sequela in this series of childhood DM.