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In rare cases, the diagnosis of Crohn’s disease (CD) can only be achieved using small bowel capsule endoscopy (SBCE). We investigate the characteristics of patients with CD only visible on SBCE and assess their disease course. Data of all adult patients with confirmed CD diagnosis based on SBCE with normal endoscopic and cross-sectional imaging findings were retrospectively collected in three tertiary-level hospitals from January 2014 to March 2020. Thirteen patients were included. Ten patients were females, and the mean age at diagnosis was 36 years. Ileum was mostly involved (85%), while duodenum and jejunum were affected in 23% and 38% of the cases, respectively. Nine patients had one segment involved, while four subjects had two or three segments affected. All patients had inflammatory behavior. First treatment consisted of steroids in all cases, and six patients were later treated with immunosuppressant or biologics. After a mean follow-up of 27.5 months, no change in disease behavior, hospitalization, or CD-related surgery was observed. CD only visible at SBCE is a rare condition with a more favorable disease course compared to general CD with a lower rate of complicated behavior, hospitalization, and surgery, despite a similar use of immunosuppressant or biologics.

In rare cases, the diagnosis of Crohn's disease (CD) can only be achieved using small bowel capsule endoscopy (SBCE). We investigate the characteristics of patients with CD only visible on SBCE and assess their disease course.Data of all adult patients with confirmed CD diagnosis based on SBCE with normal endoscopic and cross-sectional imaging findings were retrospectively collected in three tertiary-level hospitals from January 2014 to March 2020.Thirteen patients were included. Ten patients were females, and the mean age at diagnosis was 36 years. Ileum was mostly involved (85%), while duodenum and jejunum were affected in 23% and 38% of the cases, respectively. Nine patients had one segment involved, while four subjects had two or three segments affected. All patients had inflammatory behavior. First treatment consisted of steroids in all cases, and six patients were later treated with immunosuppressant or biologics. After a mean follow-up of 27.5 months, no change in disease behavior, hospitalization, or CD-related surgery was observed.CD only visible at SBCE is a rare condition with a more favorable disease course compared to general CD with a lower rate of complicated behavior, hospitalization, and surgery, despite a similar use of immunosuppressant or biologics.

The original version of the article unfortunately contained an error in the surname of the second author, Dr. Ferdinando D’Amico in the author group.