title: Reexpansion pulmonary edema: computed tomography findings in 22 patients.
abstract: OBJECTIVE
  To determine the computed tomography (CT) imaging features of reexpansion pulmonary edema.
  
  
  METHODS
  A retrospective review was performed of 22 consecutive patients with clinical and radiologic features consistent with reexpansion pulmonary edema (14 male, 8 female; mean age, 56±22.8 y; range, 19 to 82 y) and with available CT scan images within 3 days of drainage of pleural effusion or pneumothorax. The CT images were reviewed by 2 chest radiologists with consensus for the presence, extent, and distribution of ground-glass opacities, septal thickening, consolidation, presence of persistent areas of atelectasis, vascular caliber, linear opacities, residual midline shift, and trapped lung.
  
  
  RESULTS
  CT findings included ipsilateral ground-glass opacities (n=21, 95%), smooth septal thickening (n=17, 77%), consolidation (n=14, 68%), and persistent foci of atelectasis (n=19, 86%). Less commonly seen features included air-bronchograms (n=6, 27%) and nodules (n=5, 23%) [centrilobular, n=4 (18%); random, n=1 (4.5%)]. Contralateral abnormalities were seen in 8 cases (36%) and included ground-glass opacities in 6 patients, interlobular septal thickening in 3 patients (13.6%), and consolidation in 3 patients.
  
  
  CONCLUSIONS
  The most common CT findings of reexpansion pulmonary edema include ipsilateral ground-glass opacities, septal thickening, foci of consolidation, and areas of atelectasis.
authors.affiliation: Department of Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada. tadhggleeson@hotmail.com
authors.forename: Tadhg
authors.initials: T
authors.lastname: Gleeson
authors.forename: Rennae
authors.initials: R
authors.lastname: Thiessen
authors.forename: Nestor
authors.initials: N
authors.lastname: Müller
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006343:Heart Septal Defects / Q000150:complications / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D001261:Pulmonary Atelectasis / Q000150:complications / Q000000981:diagnostic imaging; D011654:Pulmonary Edema / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed