Eosinophilic granulomatosis with polyangiitis (Churg-Strauss)

Supine high-resolution CT scan through the right lower and middle lobes in a patient with eosinophilic granulomatosis with polyangiitis (Churg-Strauss) demonstrates a thickened major fissure and thickened septal lines in the subpleural parenchyma. Enlarged pulmonary arteries are also present in this area. The adjacent bronchi are normal in size with some peribronchiolar thickening. Small patchy opacities are present in the pulmonary parenchyma and are believed to correlate with the eosinophilic pneumonitis that is present.