Inflammatory bowel disease
Clinical Ulcerative colitis Crohn's disease
Rectal bleeding Common Rare
Abdominal mass Rare 10-15%
Abdominal pain Left-sided Right-sided
Abnormal endoscopy 95% < 50%
Perforation 12% 4%
Colon carcinoma 5-10% Rare
Response to steroids 75% 25%
Surgical outcome Excellent Fair
Rectal involvement > 95% !0%
Radiology
Ileal involvement Rare Usual
Cross-hatched ulcers Rare Occasional
Thumbprinting Absent Common
Fissuring Absent Common
Skip areas Absent Common
Strictures Absent Common
Pathology
Distribution Diffuse Focal
Superficial Transmural
Mucosal atrophy Regeneration Marked Minimal
Hyperemia Often marked Minimal
Crypt abscess Common Rare
Cytoplasmic mucin Decreased Intact
Lymphoid aggregates Rare Common
Lymph nodes Reactive hyperplasia -----
Edema Minimal Marked
Granulomas Absent 60%