The sonographic diagnosis of neonatal adrenal hemorrhage.

Neonatal adrenal hemorrhage can be diagnosed with a combination of ultrasound and excretory urography without resorting to surgical exploration or invasive diagnostic procedures. The radiologic findings of adrenal hemorrhage on excretory urography include downward displacement of the kidney on the affected side and a radiolucent suprarenal mass on the body nephrogram phase. Ultrasound studies reveal a sonolucent suprarenal mass. Four cases of varying degrees of adrenal hemorrhage are presented together with the radiographic and sonographic findings.