title: Classification of air density areas in CT-pathologic correlation of pulmonary adenocarcinoma.
abstract: Air density areas (ADAs) such as air bronchogram, bubble-like area, and cavity on high resolution computed tomography (HRCT) of pulmonary adenocarcinoma were examined to clarify their pathological implications. Forty-two resected specimens of pulmonary adenocarcinoma were histopathologically examined in correlation with the HRCT findings with particular emphasis on ADAs. Forty-one ADAs observed in 32 of 42 cases with pulmonary adenocarcinoma were classified into three types: air bronchogram type (n = 22), bubble-like area type (n = 12), and cavity type (n = 8). Twenty of 22 air bronchogram ADAs corresponded to bronchi. Nine of 12 bubble-like area ADAs corresponded to bronchioles. Only one of eight cavity-ADAs consisted of necrosis. The classification of ADAs in pulmonary adenocarcinoma is considered to be useful in interpreting HRCT findings of pulmonary nodules.
authors.affiliation: Department of Radiology, Niigata University School of Medicine, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Koizumi
authors.forename: S
authors.initials: S
authors.lastname: Akita
authors.forename: K
authors.initials: K
authors.lastname: Sakai
authors.forename: J
authors.initials: J
authors.lastname: Oda
authors.forename: H
authors.initials: H
authors.lastname: Tsukada
authors.forename: H
authors.initials: H
authors.lastname: Usuda
authors.forename: I
authors.initials: I
authors.lastname: Emura
authors.forename: M
authors.initials: M
authors.lastname: Naito
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D002282:Adenocarcinoma, Bronchiolo-Alveolar / Q000000981:diagnostic imaging / Q000473:pathology; D000231:Adenocarcinoma, Papillary / Q000000981:diagnostic imaging / Q000473:pathology; D000388:Air; D001980:Bronchi / Q000473:pathology; D001987:Bronchiectasis / Q000000981:diagnostic imaging / Q000473:pathology; D001995:Bronchography; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D009336:Necrosis; D011856:Radiographic Image Enhancement; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods