Duplication Cyst
Michael P. Federle, MD, FACR
Harpreet Dhatt, BA
Key Facts
Terminology
Named according to portion of GI tract adjacent to cysts
Imaging
Most common sites are ileum (33%), esophagus (20%), large bowel (13%), jejunum (10%), stomach (7%), and duodenum (5%)
82% are spherical cysts: No communication with lumen
18% are tubular: Often communicate with lumen of adjacent gut
Top Differential Diagnoses
Depends on location of cyst and imaging modality
Duodenum (for example): Pancreatic pseudocyst
Ileum: Meckel diverticulum
Pathology
Usually lined by GI tract epithelium with smooth muscle in wall
Ectopic mucosa within cysts includes gastric, squamous, transitional, and ciliated mucosa
Associated: Vertebral anomalies, esophageal atresia, other GI tract duplications
Clinical Issues
Most are discovered in infancy or early childhood
Most common symptoms are related to luminal obstruction (tracheal compression, painful abdominal cramps, dysphagia, constipation)Related posts:
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