butterfly pattern

but·ter·fly pat·tern

1. bilateral, symmetric, pulmonary alveolar opacities sparing the periphery, on chest radiographs; usually caused by pulmonary edema. 2. Synonym(s): bat's wing pattern
A term referring to the fine diffuse infiltrates seen on a plain AP/PA chest film that radiate bilaterally from the hilum to the lung periphery, a finding which is characteristic of pulmonary alveolar proteinosis

butterfly pattern

Imaging The fine diffuse infiltrates seen by a plain chest film that radiates bilaterally from the hilum to the lung periphery, characteristic of pulmonary alveolar proteinosis.

but·ter·fly pat·tern

(bŭt'ĕr-flī pat'ĕrn) Bilateral, symmetric, pulmonary alveolar opacities sparing the periphery, on chest radiographs; usually caused by pulmonary edema.