ABSTRACT
Ultrasonographic delineation of the adrenal glands and small adrenal lesions is usually more difficult than that of other abdominal organs because these small structures are located high and deep in the rib cage, especially the left adrenal gland, which may be obscured by bowel gas or lung. Successful scanning usually requires prior knowledge of detailed anatomy in the adrenal areas and a careful and appropriate scanning method. With the advent of many improvements in ultrasound equipment, e.g., well-focused beam profile, tissue harmonic imaging, and compound real-time scanning, adrenal lesions are becoming more readily visible by ultrasonography.
