"CT angiogram sign" in obstructive pneumonitis and pneumonia.
OBJECTIVE
The "CT angiogram sign" in dynamic pulmonary CT consists of enhanced branching pulmonary vessels in a homogeneous hypoattenuating consolidation of lung parenchyma and is reportedly useful for diagnosing lobar bronchioloalveolar cell carcinomas.


METHODS
To identify cases exhibiting the CT angiogram sign, we retrospectively reviewed the reports of 5,500 dynamic incremental CT examinations of the chest.


RESULTS
We identified the CT angiogram sign in five patients with obstructive pneumonitis due to lung tumors and four patients with pneumonias.


CONCLUSIONS
The CT angiogram sign can be observed in pulmonary consolidation of varying etiologies.
Murayama
S
S
Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Onitsuka
H
H
Murakami
J
J
Torii
Y
Y
Masuda
K
K
Nishihara
K
K
D002282:Adenocarcinoma, Bronchiolo-Alveolar / Q000000981:diagnostic imaging* / Q000453:epidemiology; D000792:Angiography / Q000379:methods; D006801:Humans; D007479:Iopamidol; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology; D011014:Pneumonia / Q000000981:diagnostic imaging* / Q000209:etiology; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*
D007479:Iopamidol