title: Paramediastinal pneumatocele: alternative explanations to gas in the pulmonary ligament.
abstract: Four cases of paramediastinal pneumatocele were examined with CT to determine the location of the gas collection. Although such collections have previously been assumed to be in the pulmonary ligament, CT in these cases showed instead that the collection was in either the medial pleural space or in the posterior mediastinum.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005740:Gases; D006801:Humans; D008022:Ligaments; D008168:Lung; D008297:Male; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging*; D011030:Pneumothorax / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
chemical_list: D005740:Gases