Related Experiment Video
Updated: May 23, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
[Distinguishing benign from malignant incidental adrenal lesions in enhanced CT imaging]
Ling Yang1, Shuang Zhao, Ya-Jun Hu
1Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
Objective:
To characterize the differences in radiologic features between benign and malignant adrenal lesions.
Methods:
Enhanced multiple-slice spiral CT images of 99 patients with adrenal tumors were reviewed retrospectively, investigating into morphological features of different kinds of adrenal lesions with Wash-in Amplitude (WA, venous phase attenuation-unenhanced attenuation) and relative wash-in ratio (RWR, WA/artery phase attenuation).
Results:
A combination of threshold in diameter = 3.2 cm, unenhanced attenuation = 24 HU, and RWR value = 0.879 produced 94.28% sensitivity and 98.43% specificity in diagnosing adenomas.
Conclusion:
Enhanced CT imaging improves diagnostic accuracy of incidental adrenal lesions.
Related Concept Videos
Anatomy of the Adrenal Glands
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct regions...
Imaging Studies III: Computed Tomography
Adrenal Gland Disorders
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Cushing Syndrome I: Introduction
Imaging Studies for Cardiovascular System V: CT

