SBE procedure characteristics
All patients underwent CTE examination before SBE procedure, and confirmed the presence of polyps≥10mm. As table 2 shows, A total of 129 hospitalizations (including 248 SBE procedures, 126 via oral approach and 122 via anal approach) were performed in 102 patients. A total of 5390 polys (diameter≥10mm) were resected, including 3616 (67.1%) using an oral approach and 1774 (32.9%) using an anal approach. The mean intubation depth was (248.5±62.4) cm and (180.8±32.0) cm for the oral and anal procedures, respectively. The total enteroscopy rate was 42.4% (50/118). Regarding the procedure characteristics of children, A total of 723 polys were resected, including 429 using an oral approach and 294 using an anal approach. The mean intubation depth was (254.5±35.0) cm and (177.3±26.1) cm for the oral and anal procedures, respectively.
As table 3 shows, the maximum size of the resected polyps via the anal approach during the second hospitalization was significantly smaller than that during the first hospitalization ([2.25±1.29] cm vs [4.26±3.51] cm, P = 0.032). The median number of resected polyps was 38.0(oral approach) and 8.0 (anal approach) during the first hospitalization, and 27.0 (oral approach) and 4.0 (anal approach) during the second hospitalization. The number of resected polyps had a tendency to decrease, although these results were not statistically significant. As table 4 shows, the intubation depth via oral approach of patients with history of laparotomy was significantly shorter than that of the patients without history of laparotomy ([241.6±64.2] cm vs [280.9±40.2] cm, P = 0.008).
The overall complete treatment rate was 95.3%. For patients with total enteroscopy, 1 patient presented many large polyps that could not be resected in one hospitalization. Among the rest patients, all polyps larger than 10 mm were successfully resected. The complete treatment rate in these patients was 98%. For patients without total enteroscopy, 1 patient underwent surgical operation for a giant (>5cm) and wide-base polyp, 1 patient presented a polyp which is a suspect of malignant tumor in duodenum, and was diagnosed as adenocarcinoma after surgical operation, 3 patients presented residual polyps. Among the rest patients, all polyps larger than 10 mm in the examined segment of small bowel were resected successfully. All polyps suspected to be equal or larger than 20 mm by CTE were confirmed by SBE. The complete treatment rate in these patients was 93.7%.