Therapeutic advances in gastroenterology · 2018
Different clinical outcomes in Crohn's disease patients with esophagogastroduodenal, jejunal, and proximal ileal disease involvement: is L4 truly a single phenotype?
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Mao Ren, Tang Rui-Han, Qiu Yun, Chen Bai-Li, Guo Jing, Zhang Sheng-Hong, Li Xue-Hua, Feng Rui, He Yao, Li Zi-Ping, Zeng Zhi-Rong, Eliakim Rami, Ben-Horin Shomron, Chen Min-Hu
Аннотация
BACKGROUND: The Montreal classification defines L4 Crohn's disease (CD) as any disease location proximal to the terminal ileum, which anatomically includes L4-esophagogastroduodenal (EGD), L4-jejunal, and L4-proximal ileal involvement. L4-jejunal disease was established to be associated with poor prognosis. However, the outcome of patients with L4-proximal ileal disease or L4-EGD remains to be clarified. Our study aimed to investigate whether the outcome differs among CD patients with L4-EGD, L4-jejunal, and L4-proximal ileal disease.
METHODS: In our retrospective cohort study, 483 patients with confirmed CD were included. The primary outcome was intestinal surgery. Demographic features and outcomes were compared among L4-EGD, L4-jejunal, and L4-proximal ileal disease.
RESULTS: Thirty-nine (8.1%) patients had isolated L4 disease, whereas 146 patients had L4 as well as concomitant L1, L2, or L3 disease. During a median follow up of 5.8 years, L4 patients were more likely to have intestinal surgeries compared to non-L4 patients (31% versus 16%, p < 0.001). The percentage of L4-jejunal patients who underwent surgery was higher than that of L4-proximal ileal (66% versus 28%, p < 0.001), and both of these subtypes of L4 were at higher risk for intestinal resection compared to L4-EGD patients (66% and 28% versus 9%, respectively, p < 0.001 and p < 0.05). On multi-variable analysis, L4-jejunal (HR 3.08; 95% CI 1.30-7.31) and L4-proximal ileal disease (HR 1.83; 95% CI 1.07-3.15) were independent predictors for intestinal resection.
CONCLUSIONS: L4 disease had worse prognosis compared to non-L4 disease. Within L4 disease, phenotype of L4-jejunal and L4-proximal ileal disease indicated higher risk for intestinal surgery. It might be justified to further characterize the L4 phenotype of the Montreal classification into three specific subgroups including L4-EGD, L4-jejunal, and L4-proximal ileal disease, similar to the Paris classification of pediatric patients.
METHODS: In our retrospective cohort study, 483 patients with confirmed CD were included. The primary outcome was intestinal surgery. Demographic features and outcomes were compared among L4-EGD, L4-jejunal, and L4-proximal ileal disease.
RESULTS: Thirty-nine (8.1%) patients had isolated L4 disease, whereas 146 patients had L4 as well as concomitant L1, L2, or L3 disease. During a median follow up of 5.8 years, L4 patients were more likely to have intestinal surgeries compared to non-L4 patients (31% versus 16%, p < 0.001). The percentage of L4-jejunal patients who underwent surgery was higher than that of L4-proximal ileal (66% versus 28%, p < 0.001), and both of these subtypes of L4 were at higher risk for intestinal resection compared to L4-EGD patients (66% and 28% versus 9%, respectively, p < 0.001 and p < 0.05). On multi-variable analysis, L4-jejunal (HR 3.08; 95% CI 1.30-7.31) and L4-proximal ileal disease (HR 1.83; 95% CI 1.07-3.15) were independent predictors for intestinal resection.
CONCLUSIONS: L4 disease had worse prognosis compared to non-L4 disease. Within L4 disease, phenotype of L4-jejunal and L4-proximal ileal disease indicated higher risk for intestinal surgery. It might be justified to further characterize the L4 phenotype of the Montreal classification into three specific subgroups including L4-EGD, L4-jejunal, and L4-proximal ileal disease, similar to the Paris classification of pediatric patients.