Visceral pleural invasion by pulmonary adenocarcinoma ≤3 cm: the pathological correlation with pleural signs on computed tomography

This is the authors' abstract. We don't add key points for this paper.

Pleural signs can be categorized into five types of group A and four types of group B in the study. Type III-IV of group A and type I and III of group B may be indicators to VPI. Non-intact extrapleural fat layer and mediastinal pleural abnormality may increase the diagnosis accuracy of VPI.