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The presence of migrating Ascaris larvae in the lungs, particularly of a child, may produce the roentgen appearance of scattered, transient, soft, patchy, ill defined asymmetrical infiltrates (Löffler's pneumonia) on chest radiography (Fig. 10.31).
Fig. 10.31 Löffler's pneumonia in a 29-year-old Korean man who had just immigrated to the U.S. There was a high peripheral eosinophilia. Serial chest films (A-D) over a 12 day period showed a typical pattern of scattered, well-defined, transient, asymmetrical areas of patchy infiltrate or consolidation with associated pleural reaction in the right lower (A-C), right upper (B and C) and left mid-lung fields (C and D). There is slight pleural fluid along the right lateral chest wall and in the minor fissure (A and B), and later at the left costophrenic angle. Notice especially the fleeting asymmetrical nature of the infiltrates characteristic of Löffler's syndrome.
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Copyright: Palmer and Reeder
