1994 Volume 34 Issue 2 Pages 199-207
The thin-section CT images of 18 patients with pulmonary adenocarcinoma were compared with the histological structure of the resected specimen with paticular emphasis on growth pattern and interstitial change. The thin-section CT images were classified into six kinds of domains (D1a, D1b, D2a, D2b, D3a, D3b) from the point of density (1: homogeneously low, 2: nonhomogeneous, 3: homogeneously high) and shape of the margin (a: smooth, b: irregular), which resulted in 52 domains (D1a; 7 domains, D1b; 7 domains, D2a; 11 domains, D2b; 7 domains, D3a; 8 domains, D3b; 12 domains). D1a corresponded to bronchioloalveolar type of well-differentiated adenocarcinoma with mild interstitial change. Interstitial changes became prominent in order of D1, D2, D3. Various growth patterns were noted in D2 and D3a. D3b showed severe interstitial changes which might suggest poor prognosis.
