Ten of the 17 patients 59% with obvious OGB and P2 lesions had vascular lesions, six 35% had inflammatory lesions and one 6% had a neoplastic lesion.
Las causas del sangrado en los 17 pacientes con SGO evidente y lesiones tipo P2 eran: vasculares 10 59%, inflamatorias 6 35% y 1 6% neoplásica.