THE SIZE OF NORMAL ADRENAL-GLANDS ON COMPUTED-TOMOGRAPHY

The aim of our study was to determine the size of normal adrenal gland s. Measurements of the adrenal glands were obtained from computed tomo graphic (CT) images in 55 patients already undergoing CT for routine c linical indications. Patients with conditions known to affect the size of adrenal glands or cases with focal adrenal enlargement suggesting a mass were excluded. The following dimensions were measured: the maxi mum width perpendicular to the long axis of the body of the gland, and maximum width of the medial and lateral limbs. The average measuremen ts for the right adrenal gland were: maximum width 0.61 mm (S.D. 0.2), width of the medial Limb 0.28 mm (S.D. 0.08), and width of the latera l limb 0.28 mm (S.D. 0.06). The average measurements for the left adre nal gland were: maximum width 0.79 mm (S.D. 0.21), width of the medial limb 0.33 mm (S.D. 0.09), and width of the lateral limb 0.30 mm (S.D. 0.10).