Trans-thoracic Ultrasound (US) has the capacity of allowing for dynamic real-time imaging of the pulmonary lesion and the chest wall. Therefore, US has the potential to allow for the appreciation of subtle findings related to the movement of the lesion and lung over the chest wall. Hence, US might be an accurate tool to assess chest wall invasion by lung cancer; thus improving pre-operative diagnosis, staging and operative planning of patient with chest wall invasion.