When the endoscopic appearance suggests that the penetration depth of the tumor in the digestive wall does not extend beyond the submucosal layer, the lesion is called a "superficial injury." In other words, the chances that there is infiltration of the muscularis propria layer are negligible.
En endoscopia, se llama "lesión superficial" cuando la apariencia endoscópica sugiere que la profundidad de penetración del tumor en la pared digestiva no es mayor a la capa submucosa, o sea, que las posibilidades de que exista infiltración de la capa muscular propia son ínfimas.