| 
  
  
 | 
 
  
  
 
Esophageal Web 
  
   
  
   
 
 
  
  - Ringlike constriction of upper       esophagus covered on superior and inferior surfaces by squamous epithelium
 
  - Three types have been described: 
 
  
    - A non-specific or idiopathic web        (most common)
 
    - Webs associated with        Plummer-Vinson Syndrome
 
    - Webs associated with epidermolysis        bullosa dystrophica or graft-versus-host disease
 
   
  - Usually found in middle-aged       females
 
  - Plummer-Vinson       Syndrome=Patterson-Kelly syndrome 
 
  
    - Iron deficiency anemia
 
    - Stomatitis
 
    - Glossitis
 
    - Dysphagia
 
    - Spoon-shaped nails
 
    - Esophageal webs
 
    - Some question as to whether such a        syndrome exists
 
   
  - Location 
 
  
    - Cervical esophagus anteriorly at        level of the cricopharyngeous (C5-C6)
 
    - Best visualized with maximal        distension
 
    - Distal esophageal webs may arise        from gastroesophageal reflux
 
   
  - Imaging       Findings
 
  
    - Thin, transverse filling defects
 
    - Perpendicular to anterior        esophageal wall
 
    - Usually less than 3mm in thickness
 
    - Frequently they are not        circumferential
 
   
  - Increased risk of upper esophageal       carcinoma
 
  - DDx
 
  
    - Prominent cricopharyngeous muscle
 
    
      - Arises posteriorly at C5-C6 and produces         a much broader defect
 
     
    - Stricture
 
   
  - Treatment
 
  
    - Balloon dilatation
 
    - Bougienage during esophagoscopy
 
   
 
   
  
  Esophageal Web. Barium esophagram demonstrates a thin membrane 
            arising from the anterior wall of the cervical 
esophagus at the level of C5-C6 without circumferential involvement 
            of the lumen characteristic 
for an esophageal web 
  
   
Halpert,  R and Feczko, P: Requisites of Gastrointestinal  Radiology, 2nd edition, 1999. 
  
  
 
 
 
  
  
 | 
  
  
 | 
  
  
 |