Aspecific ileitis: Crohn's disease or not Crohn's disease? A prospective study

Abstract

Purpose: It is not clear whether aspecific ileitis may represent an early manifestation or a milder variant of Crohn's disease or not. The aim of this study was to evaluate the clinical outcomes of aspecific ileitis.

Methods: Subjects with at least one of the following signs at retrograde ileoscopy: erythema, nodularity, aftae, erosions, and ulcers were considered. They should not have had defined gastrointestinal disease, biochemical signs of inflammation, use of drugs, celiac disease, and intestinal infectious disease.

Results: We enrolled 51 subjects (22 men), mean age (± SD) at colonoscopy of 41.1 ± 13.1 years. Indications to colonoscopy were overt or occult intestinal bleeding (18), diarrhoea (15), systemic signs (10), IBS-like symptoms (5), other (3). Ileal lesions were ulcers (9), erosions (26), aftae (10), nodularity (3), and erythema (3). At histological evaluation aspecific findings were observed. Forty-four out of 51 (86.3%) subjects underwent further investigations of small bowel. Second colonoscopy was performed in 31 (60.8%) persisting symptomatic subjects: ileitis was confirmed in 14 (46.6%). Ten out of 51 (19.6%) were eventually diagnosed as affected by Crohn's disease.

Conclusions: A substantial proportion of subjects with endoscopic and histological findings of aspecific ileitis is eventually diagnosed as affected by Crohn's disease. In these subjects, a strict follow-up is strongly recommended.

Keywords: Crohn’s disease; Ileitis; Ileo-colonoscopy; Inflammatory bowel disease.