10 cm) adrenal masses including those benign imaging features, as the adrenal mass may be diagnosed as malignant on a definitive histologic review. Incidentalomas with a benign appearance may be followed up through another CT or MRI in 6 to 12 months’ time. Most experts would consider resecting any tumor that enlarges by more than 1 cm in diameter during the follow-up period. However, most adrenal masses that grow are not malignant." /> 10 cm) adrenal masses including those benign imaging features, as the adrenal mass may be diagnosed as malignant on a definitive histologic review. Incidentalomas with a benign appearance may be followed up through another CT or MRI in 6 to 12 months’ time. Most experts would consider resecting any tumor that enlarges by more than 1 cm in diameter during the follow-up period. However, most adrenal masses that grow are not malignant." />