The extremely narrow-caliber esophagus is a treatment-resistant subphenotype of eosinophilic esophagitis

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• 作者：Swathi Eluri ; MD¹ ; Thomas M. Runge ; MD ; MPH¹ ; Cary C. Cotton ; MPH¹ ; Caitlin M. Burk ; BA¹ ; W. Asher Wolf ; MD ; MPH¹ ; John T. Woosley ; MD ; PhD³ ; Nicholas J. Shaheen ; MD ; MPH¹ ; ² ; Evan S. Dellon ; MD ; MPH¹ ; ² ;
• 关键词：CI ; confidence interval ; EoE ; eosinophilic esophagitis ; eos/hpf ; eosinophils per high-power field ; OR ; odds ratio ; UNC ; University of North Carolina
• 刊名：Gastrointestinal Endoscopy
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：83
• 期：6
• 页码：1142-1148
• 全文大小：369 K

文摘

Some patients with eosinophilic esophagitis (EoE) have an extremely narrow esophagus, but the characteristics of this group have not been extensively described. We aimed to characterize the narrow-caliber phenotype of EoE, determine associated risk factors, and identify differences in treatment response in this subgroup of patients.

Methods

This retrospective cohort study from 2001 to 2014 included subjects with a new diagnosis of EoE per consensus guidelines. Demographic, endoscopic, histologic, and treatment response data were extracted from medical records. An extremely narrow-caliber esophagus was defined when a neonatal endoscope was required to traverse the esophagus due to the inability to pass an adult endoscope. Patients with and without an extremely narrow-caliber esophagus were compared. Multivariable logistical regression was performed to assess treatment outcomes.

Results

Of 513 patients with EoE, 46 (9%) had an extremely narrow-caliber esophagus. These patients were older (33 vs 22 years; m>Pm> < .01), had longer symptom duration (11 vs 3 years; m>Pm> < .01), more dysphagia (98% vs 66%; m>Pm> < .01), and food impactions (53% vs 31%; m>Pm> < .01). Dilation was more common with extreme narrowing (69% vs 17%; m>Pm> < .01). Patients with a narrow-caliber esophagus were more refractory to steroid treatment, with lower symptom (56% vs 85%), endoscopic (52% vs 76%), and histologic (33% vs 63%) responses (m>Pm> < .01 for all), and these differences persisted after multivariate analysis.

Conclusion

The extremely narrow-caliber esophagus is a more treatment-resistant subphenotype of EoE and is characterized by longer symptom duration and the need for multiple dilations. Recognition of an extremely narrow-caliber esophagus at diagnosis of EoE can provide important prognostic information.