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Lung Cancer: Lung Cancer: Imaging |

Identification of Solitary Pulmonary Nodule Based on Chest CT Three-Dimensional Reconstruction FREE TO VIEW

Yong Li, MD
Author and Funding Information

Luwan Branch of Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China


Copyright 2016, American College of Chest Physicians. All Rights Reserved.


Chest. 2016;149(4_S):A284. doi:10.1016/j.chest.2016.02.296
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SESSION TITLE: Lung Cancer: Imaging

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Saturday, April 16, 2016 at 11:45 AM - 12:45 PM

PURPOSE: To investigate the value of chest CT three-dimensional reconstruction in the differential diagnosis of solitary pulmonary nodules (SPN).

METHODS: We collected 32 cases with SPN (size <1.0cm) confirmed by operation and pathology in our hospital, detection and analysis SPN’s lobulated, speculation and vessel convergence sign based on chest CT three-dimensional (3D) reconstruction and conventional chest CT scan.

RESULTS: This study collected a total of 32 cases, including male 14 cases, female 18 cases, age 60.12+8.82 years old, SPN size 0.75+0.23cm. In 32 cases, 11 cases of benign nodules and 19 cases of malignant nodules according to the pathology after surgery, while 2 cases were excluded from chest CT 3D reconstruction. In malignant SPN, chest CT 3D reconstruction with conventional chest CT scan differences in lobulated sign detection rate was not statistically significant (21.1% vs 15.8%, P >0.05), on the speculation sign detection rate, chest CT 3D reconstruction than conventional chest CT, the difference was statistically significant (100.0% vs 68.4%, P<0.05), in the vessel convergence sign detection rate, chest CT 3D reconstruction than conventional chest CT, the difference was statistically significant (100.0% vs 57.9%, P <0.05). In the benign SPN, the chest CT 3D reconstruction with conventional chest CT scan on the lobulated was no difference in the detection rate (0.0% vs 0.0%), the spiculation detection rate, chest CT 3D reconstruction than conventional chest CT is lower, but the difference was not statistically significant (0.0% vs 36.4%, P >0.05), in the vessel convergence sign detection rate, chest CT 3D reconstruction lower than conventional chest CT, but the difference was not statistically significant (18.2% vs 45.5%, P >0.05). We found there were two characteristic of vessel convergence based on chest CT 3D reconstruction. SPN has one blood vessel (2 cases) which confirmed benign and has two and more than two blood vessels (30 cases) which confirmed malignant.

CONCLUSIONS: We found that spiculation and vessel convergence sign in occurrence rate of CT 3D reconstruction were higher than those of the common chest CT scan in malignant SPN. We think the vessel convergence sign appears should first consider the malignant, especially the multiple vessels. Chest CT 3D reconstruction is better than common chest CT scan in the observation of the morphology of SPN, has an important value in differential diagnosis of SPN.

CLINICAL IMPLICATIONS: no

DISCLOSURE: The following authors have nothing to disclose: Yong Li

No Product/Research Disclosure Information


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