Nonspecific interstitial pneumonia in a 30-yr old man with dermatomyositis; A, high resolution computed tomography showing peripheral reticulation, irregular linear opacities, and mild ground glass opacity; B, C, microscopy of lung biopsy at low (B) and high (C) magnification showing uniform infiltration of alveolar septa by inflammatory cells and mild fibrosis (courtesy of Dr. L. Chalabreysse, Lyon).