Ng CS, et al. - Researchers resolved to determine the imaging and patient parameters which influenced the diagnostic performance of delayed contrast-enhanced CT for distinguishing malignant from benign adrenal lesions larger than 1 cm in adult patients and to derive predictive models. An improvement was achieved in the diagnostic performance for characterizing adrenal lesions via multivariate imaging evaluation applied to delayed contrast-enhanced CT alone, with or without patient characteristics, beyond those of single-parameter evaluations. Data yielded predictive formulas assessing the probabilities of lesion benignity or malignancy.