A lung abscess, when identified through ultrasound (US) findings, typically presents as a well-defined, cavitary lesion within the lung parenchyma. These findings often include a heterogeneous, hypoechoic or anechoic center, indicative of purulent material, surrounded by a thicker, irregular wall. Air-fluid levels within the cavity are a classic sonographic feature, along with the presence of internal septations or debris, reflecting the complex nature of the infection.
Ultrasound offers a valuable, non-invasive method for diagnosing and monitoring lung abscesses, especially in patients where CT scans are contraindicated or difficult to obtain. Key ultrasound findings like the “shred sign” or “fluid bronchogram” can further support the diagnosis, aiding clinicians in guiding percutaneous drainage and assessing treatment response, thereby improving patient management in pulmonary infections.