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Description of two cases of acute haemorrhagic oedema (purpura en cocarde with oedema) in infants with its clinical signs: oedema occurring distally, ecchymotic purpura en cocarde, associated generally with rhinopharyngeal manifestations. Histology: pericapillaritis with diapedesis and discrete inflammation is not pathognomonic.

Rare intracytoplasmic membranous inclusions derived from the endoplasmic reticulum were observed in the histiocytes of one case of Dego' syndrome and one case of dermatomyositis. Cross-section and longitudinal sections made it possible to establish a three-dimensional model in which both microcylinders and layers of rolled-up double membranes appear.

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