Emerging Role of Transcutaneous Ultrasound in the Diagnostic of Lung Cancer

Lung cancer is one of the most commonly diagnosed malignancies worldwide and continues to be a leading cause of cancer-related mortality. Precise staging is crucial for predicting outcomes and directing treatment decisions. Current international guidelines mainly recommend imaging techniques like CT and PET-CT, with limited references to transcutaneous ultrasound, which is only suggested in particular clinical cases. Ultrasound provides real-time imaging, high resolution in near-field structures, and the ability to assess thoracic wall infiltration, supraclavicular and cervical lymph nodes, pleural effusions, and metastatic lesions. Furthermore, ultrasound-guided biopsies can enable quick and safe histological confirmation of accessible lesions. Based on these advantages and a review of current literature, we propose that integrating ultrasound into staging algorithms could improve diagnostic efficiency, decrease invasive procedures, and support prompt treatment planning. We also highlight the need for further research in this area.