NCIthesaurus has symptom disease has feature Crohn's colitis An inflammatory bowel disease characterized by inflammation located_in colon only, has_symptom diarrhea, has_symptom rectal bleeding, has_symptom skin lesions and has_symptom formation of ulcers, fistulas and abscesses around the anus. ICD9CM:555.1 ICD10CM:K50.1 UMLS_CUI:C0156147 MESH:D003424 disease_ontology DOID:0060192 NCI:C37262 OWL classification. SNOMEDCT_US_2025_09_01:7620006 2014-09-15T12:50:24Z anal fistula ulcer of anus and rectum Crohn's disease bleeding inflammation skin lesion diarrhea abscess anal abscess