What radiographic characteristics help determine the diagnosis of interstitial disorders?
Interstitial abnormalities may be roughly subdivided into abnormalities that produce small round opacities ( nodular interstitial diseases ) and abnormalities that produce small networks of holes ( reticular interstitial diseases ). In this chapter, we describe one nodular pattern of interstitial disease and the three following reticular patterns of interstitial disease: the peripheral reticular pattern, the linear pattern, and the cystic pattern.
