Ultrasonography of adrenal masses: usual features.

Gray-scale B-scan was successful in delineating adrenal masses in 40 patients, all confirmed pathologically. Two patients with extra-adrenal pheochromocytomas, two calcified cysts, and two patients with bilateral adrenal hyperplasia are demonstrated. The usual ultrasonographic features are presented in this paper; they correlated well with urographic, angiographic, CT, and pathological findings. The smallest mass demonstrated was an aldosteronoma (1.3 cm in size).