Bat's wing or butterfly pulmonary opacities refer to a pattern of bilateral perihilar shadowing.
It is classically described on a frontal chest radiograph but can also refer to appearances on chest CT 3-4.
Bat's wing pulmonary opacities can be caused by
- pulmonary oedema (especially cardiogenic)
- inhalation injury
- noxious gas
- pulmonary alveolar proteinosis 3
- pulmonary haemorrhage (e.g. Goodpasture syndrome)
- lymphoma / leukaemia
- bronchoalveolar carcinoma
- 1. Shah PL, Hansell D, Lawson PR et-al. Pulmonary alveolar proteinosis: clinical aspects and current concepts on pathogenesis. Thorax. 2000;55 (1): 67-77. doi:10.1136/thorax.55.1.67 - Free text at pubmed - Pubmed citation
- 2. Webb WR and Higgins CB. Chapter 2. Consolidation and atelectasis. in Thoracic Imaging: Pulmonary and Cardiovascular Radiology. 2004; Lippincott Williams & Wilkins.
- 3. Swensen SJ, Aughenbaugh GL, Douglas WW et-al. High-resolution CT of the lungs: findings in various pulmonary diseases. AJR Am J Roentgenol. 1992;158 (5): 971-9. AJR Am J Roentgenol (abstract) - Pubmed citation
- 4. Gluecker T, Capasso P, Schnyder P et-al. Clinical and radiologic features of pulmonary edema. Radiographics. 19 (6): 1507-31. Radiographics (full text) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Bat wing opacity||✗|
|Bat wing pulmonary opacities||✗|
|Bat's wing opacity||✗|
|Bat's wing pulmonary opacity||✗|
|Batwing pulmonary opacities||✗|