Background/Aims We investigated the clinical features, and treatment outcomes in patients with non-traumatic small bowel perforations and compared these results to the previous study with patients who were diagnosed between 1997 and 2002. Methods Patients who diagnosed non-traumatic small bowel perforation between January 2003 and December 2008 were reviewed retrospectively. Results Of 38 patients of non-traumatic small bowel perforation, the most common etiologies were Crohn's disease (CD) (36.8%), followed by intestinal tuberculosis (ITB) (28.9%) and primary malignancy (15.8%). In the study of 2002, however, the most common etiologies were idiopathic (39.3%), followed by mechanical obstruction (28.6%) and infectious enteritis (14.3%). Of 38 cases, 8 perforation sites were found in the jejunum and 30 in the ileum. The number of perforations was single in 20, two in 15, and over 2 in 3 cases. Twenty-five patients were treated with resection and anastomosis, nine patients with primary closure, and four patients with both procedures. The site and number of perforations, surgical methods, and post-operative complication rates were similar to those of 2002. The perforation patients with ITB had more frequent night sweats and pulmonary tuberculosis findings than those with CD. Conclusions Although the clinical features and surgical outcomes in the 2009 study were similar to those of the previous study conducted in 2003, the etiologies of perforations were different; CD and ITB were two most common etiologies. In addition, clinical characteristics such as night sweats or pulmonary tuberculosis were suggestive findings for the diagnosis of ITB.
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