Prenatal diagnosis of fetal adrenal masses: differentiation between hemorrhage and solid tumor by color Doppler sonography

We present four cases of fetal adrenal masses detected by routine prenatal ultrasound, of which three were adrenal hemorrhages and one was a fetal neu roblastoma. The differential diagnoses of fetal adrenal mass include adrena l hemorrhage, neuroblastoma, adrenal and cortical renal cysts, pulmonary se questrations, duplication of the reno-ureteral system and a Beckwith-Wiedem ann syndrome. These can pose a diagnostic and therapeutic dilemma. A system atic comparison of the pre- and postnatal sonographic features including co lor Doppler imaging may help to differentiate adrenal hemorrhage from neuro blastoma prenatally.