Biopsy under direct vision for the diagnosis of Crohn's disease.
D001706:Biopsy; D003424:Crohn Disease / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D004724:Endoscopy; D005336:Fiber Optic Technology; D006099:Granuloma / Q000150:complications / Q000473:pathology; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D014385:Tuberculosis, Gastrointestinal / Q000175:diagnosis / Q000473:pathology