8. Positive vertical margin: Tumor cells involve the vertical submucosal margin Some consider this to occur when there is more than sm1 level which is equivalent to a depth of invasion greater than 500 microns, but this is currently in dispute.
8. Margen vertical positivo: si células del tumor comprometen el margen submucosal vertical algunos consideran que a nivel mayor a sm1 que equivale a profundidad de invasión mayor de 500 micras, aunque esto actualmente está en controversia.