+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Evaluation of the air bronchogram sign on CT in solitary pulmonary lesions

Evaluation of the air bronchogram sign on CT in solitary pulmonary lesions

Journal of Computer Assisted Tomography 20(6): 983-986

Our goal was to evaluate the presence and the significance of the air bronchogram sign in solitary pulmonary lesions (SPL) on CT. One hundred thirty-two patients with SPL who underwent chest CT scans and had histological diagnosis were studied retrospectively. We reviewed all chest CT scans to assess for the presence of the air bronchogram sign in the SPL and recorded the distribution of this sign in malignant and benign lesions. The morphology of the aerated bronchi in the lesion and its significance in differential diagnosis were also evaluated. Of 17 cases of benign lesions, only 1 (5.9%) had an air bronchogram; of 115 lung cancers, 33 (28.7%) had this sign (p < 0.05). The encased bronchi exhibited four morphologic patterns: normal, tortuous, ectatic, and cut-off. The morphology of the bronchus in the benign lesion was normal. However, bronchi in malignant lesions displayed all four types of morphology. The air bronchogram sign was seen in all histologic types of lung cancer (squamous cell 10, adenocarcinoma 9, bronchioloalveolar cell 12, small cell 1, non-small cell 1). Lesions of different sizes were noted to have air bronchograms, including those < 2 cm in diameter. The CT air bronchogram sign in SPL is significantly more common in malignant than in benign lesions. The sign is seen in all lung cancer cell types and demonstrates varied bronchial morphology.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 046014515

Download citation: RISBibTeXText

PMID: 8933803

Related references

The value of the air bronchogram sign on CT image in the identification of different solitary pulmonary consolidation lesions. Medicine 97(35): E11985, 2018

Studies on the bronchogram in pulmonary tuberculosis 1 On the relationship between bronchogram and pulmonary lesions. Jour Osaka City Med Center: 1545-1557, 1959

Metastatic melanoma. Another cause of a solitary pulmonary nodule with an air bronchogram. Radiology 123(2): 286-286, 1977

Pulmonary pseudolymphoma presenting as a solitary nodular density with an air bronchogram. Chest 65(6): 691-693, 1974

CT bronchus sign in malignant solitary pulmonary lesions: value in the prediction of cell type. European Radiology 10(8): 1304-1309, 2000

Absence of the air bronchogram sign. A reliable finding in pulmonary embolism with infarction or hemorrhage. Radiology 100(3): 547-552, 1971

Accuracy of FDG PET/CT in the evaluation of solitary pulmonary lesions - own experience. Pneumonologia i Alergologia Polska 82(3): 198-205, 2014

Solitary pulmonary nodules: Part I. Morphologic evaluation for differentiation of benign and malignant lesions. Radiographics 20(1): 43-58, 2000

Solitary pulmonary lesions. Computer-aided differential diagnosis and evaluation of mathematical methods. Radiology 89(4): 605-613, 1967

Solitary pulmonary nodules. A new method for diagnosis of solitary lesions of the lung. Arizona Medicine 17: 261-266, 1960

Silhouette sign and air bronchogram. La Presse Medicale 77(15): 543-545, 1969

Evaluation of pulmonary lesions with F-18 FDG PET Comparison of findings in patients with primary pulmonary lesions, pulmonary lesions with history of prior malignancy, and clinically or radiographically suspicious thoracic lymph nodes. Journal of Nuclear Medicine 35(5 Suppl. ): 223P, 1994

The computed tomography mucous bronchogram sign. Journal of Computed Tomography 12(2): 165-168, 1988

Bronchioloalveolar carcinoma and the air bronchogram sign: a new pathologic explanation. Journal of Thoracic Imaging 9(3): 141-144, 1994

Alveolar cell carcinoma on CT scanning. The value of the air bronchogram sign. Journal of the Canadian Association of Radiologists 30(1): 64-65, 1979