Ulcerative colitis: features

 ULCERATIONS:
Ulcers
Large intestine
Carcinoma [risk]
Extraintestinal manifestations
Remnants of old ulcers [pseudopolyps]
Abscesses in crypts
Toxic megacolon [risk]
Inflamed, red, granular mucosa
Originates at rectum
Neutrophil invasion
Stools bloody