preferred_name: Diffuse ulcers, wide-based crater-like, in colon and rectum
preferred_name_lc: diffuse ulcers, wide-based crater-like, in colon and rectum
label: Diffuse ulcers, wide-based crater-like, in colon and rectum
label_lc: diffuse ulcers, wide-based crater-like, in colon and rectum