Abstract
A boy of dermatomyositis with the onset at 1 year and 5 months of age showing prominent migratory subcutaneous nodules was studied from histological and electron microscopic points.
1) By histological examinatiori, migratory subcutaneous nodules were revealed as nonsupprative panniculitis and ischemic adiponecrosis in sequel to vascular lesion. The systemic angiopathy has been described as one of the most chara-cteristic findings of childhood dermatomyositis.
2) By electron microscopic examination of ves-sels of the muscle and the subcutaneous tissue, tubular cytoplasmic inclusions having a cross sectional diameter of approximately 250 Å were found in the vascular endothelial endoplasmic reticulum. True nature of this virus-like tubular
