PURPOSE: To determine the frequency of @entity5409 on high-resolution computed tomography (CT) in @entity1 with subacute @entity56 . METHODS: High-resolution CT scans in 182 @entity1 with proven subacute @entity56 were retrospectively evaluated for the presence of @entity358 . @entity1 with CT evidence of @entity2415 or @entity82 and @entity1 with connective tissue disease were excluded from the study. Two thoracic radiologists reviewed the thoracic CT scans for the presence and location of @entity358 . RESULTS: Thin-walled @entity358 were identified in 24 (13%) of 182 @entity1 and ranged in size from 3 to 25 mm in maximal diameter. The @entity1 included 16 @entity1 and 8 @entity1 (age range, 30-79 years; mean age, 48 years). The cysts ranged from 1 to 15 in number (mean, 4 cysts) and had a random distribution. Sixteen of the 24 @entity1 also had areas of decreased attenuation and vascularity consistent with air trapping. CONCLUSIONS: Thin-walled cysts can be seen in a small percentage of @entity1 with subacute @entity56 . The cysts resemble those seen in @entity401 , and their pathogenesis is uncertain.

@entity358 in subacute XXXX .

@entity1 :: ('9606', 'Species') :: ['men', 'women', 'Patients', 'patients'] @entity82 :: ('MESH:D005355', 'Disease') :: ['interstitial fibrosis'] @entity5409 :: ('MESH:D052177', 'Disease') :: ['cystic lesions'] @entity2415 :: ('MESH:D004646', 'Disease') :: ['emphysema'] @entity358 :: ('MESH:D008171', 'Disease') :: ['lung cysts'] @entity56 :: ('MESH:D004342', 'Disease') :: ['hypersensitivity pneumonitis'] @entity401 :: ('MESH:D017563', 'Disease') :: ['lymphocytic interstitial pneumonia']
@entity56 :: (MESH:D004342,Disease) :: ['hypersensitivity pneumonitis']
