Perifascicular atropy of muscle fibres is seen in
Inflammatory Myopathies Dermatomyositis is the most common Inflammatory myopathy in children. On microscopic examination it is associated with perivascular mononuclear cell infiltrates, dropouts of capillaries, the presence of so called tubuloreticular inclusions in endothelial cells, and myofiber damage in a paraseptal or perifascicular pattern. Robbins basic pathology 9th edition page no 805,heading=
Steroid myopathy
Dermatomysotis
Inclusion body myositis
Nemaline myopathy
Breast