Abstract
Objectives. The aim of this study was to detect factors associated with small bowel obstruction (SBO) caused by bezoars on multidetector computed tomographic findings. Methods. We retrospectively reviewed 61 patients who had bezoars in the small bowels on MDCT. The patients were divided into SBO patients group and non-SBO patients group. The mean values of the diameter, volume, and CT attenuation as well as location and characteristics of the bezoars were compared between the two groups. Multivariate analysis was performed to determine factors associated with SBO. Results. There were 32 patients (52.5%) in the SBO group and 29 patients (47.5%) in the non-SBO group. The bezoars in the SBO group had greater values of each mean diameter and mean volume than those in the non-SBO group (3.2 ± 0.5 cm versus 1.6 ± 0.7 cm, P < 0.0001, 14.9 ± 6.4 cm3 versus 2.5 ± 2.7 cm3, P < 0.0001, resp.) and had a lower CT attenuation than the non-SBO group (55.5 ± 23.4 versus 173.0 ± 68.0, P < 0.0001). The SBO group had higher prevalence of phytobezoar appearance (75.0% versus 10.3%, P < 0.0001). Major diameters of bezoar and phytobezoar were significant independent risk factors associated with SBO (odds ratio = 36.09, 8.26, resp., and P = 0.0004, 0.044, resp.). Conclusions. Major diameter of bezoar or phytobezoar is a potential risk factor associated with SBO.
Highlights
In 2009, multidetector computed tomography (MDCT) has been reported to be useful in the diagnosis of small bowel obstruction (SBO) caused by bezoars
The duration of symptoms in all the patients admitted to the hospital ranged from one day to one month, with an average of 11.88 ± 7.61 days and 7.76 ± 6.83 days for the SBO group and non-SBO group, respectively
Small bowel bezoars are divided into calcareous bezoars, phytobezoars, trichobezoars, foreign stuff, and bezoars from other sources, based on their contents
Summary
In 2009, multidetector computed tomography (MDCT) has been reported to be useful in the diagnosis of small bowel obstruction (SBO) caused by bezoars. The possibility of bezoars eventually resulting in SBO might be associated with their size, location, type, and other factors. To the best of our knowledge, there is yet a lack of systematic research evaluating the relationships between these factors of small bowel bezoars and the associated risk of causing SBO. It is necessary to explore the risk factors of SBO resulting from small bowel bezoars
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