4Gaeta M, Barone M, Russi EG, et al. Carcinomatous solitary pulmonary nodules: evaluation of the tumor-bronchi relationship with thin-section CT. Radiology, 1993, 187: 535-539.
5Choi JA, Kim .JH, Hong KT, et al. CT bronchus sign in malignant solitary pulmonary-lesions: value in the prediction of cell type. Eur Radiol, 2000, 10: 1304-1309.
6Schoepf U J, Bruening RD, Hong C, et al. Multislice helical CT of focal and diffuse lung disease: comprehensive diagnosis with reconstruction of contiguous and high-resolution CT sections from a single thin-collimationscan. AJR Am J Roentgenol, 2001, 177: 179-184.
7SineJa SP. The positive bronchus sign. Radiology, 1998, 209: 251-252.
8Zhang YQ, Wang KQ, Cao DQ, et al. Air,bronchogram in differential diagnosis of small peripheral lung cancers on CT image. Chin Meal J,1993, 106: 357-360.
9Kui M,Templeton PA, White CS, et al. Evaluation of the air bronchogram sign on CT in solitary pulmonary lesions. J Comput Assist Tomogr, 1996, 20: 983-986.
10Kushihashi T, Munechika H, Ri K, et al. Bronchioloalveolar adenoma of the lung: CT-pathologic correlation. Radiology, 1994, 193: 789-793.
