What EUS features suggest malignant versus benign submucosal lesions?

What EUS features suggest malignant versus benign submucosal lesions?

• A. Benign features include irregular borders and invasion.
• B. Malignant features include irregular borders, heterogeneous hypoechoic texture, invasion of deeper layers, and abnormal regional lymph nodes.
• C. Benign lesions always have cystic spaces with anechoic areas.
• D. EUS cannot differentiate malignant from benign.

Answer: (B)