Table 1: Endosonographic criteria for suspected malignant GIST.31

Tumor size >3 cm

Heterogeneous appearance

Hyper-ecogenic areas

Hypo-ecogenic areas

Irregular tumor margin

Lobulated tumor margin

Calcifications of the wall or intratumoral calcifications

Cystic aspect

Taken from: Beltrán MA, Valenzuela C, Diaz R, Haito Y, Larrai C. Tumores del estroma gastrointestinal del duodeno: revisión de literatura científica actual con énfasis en el tratamiento. Rev Colomb Cir. 2014; 29: 140-154.