Mediastinum
Cystic lesions
Enteric cyst

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 15 June 2018, last major update December 2012

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Enteric cyst[TI]

Cite this page: Gulwani, H. Enteric cyst. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/mediastinumentericcyst.html. Accessed July 22nd, 2018.
Definition / general
  • Children or teens, with cysts usually in posterior mediastinum, due to developmental defect from fusion of tracheoesophageal septum
  • Gastric cysts may produce acid and rupture or hemorrhage
Clinical features
  • Associated with vertebral anomalies (hemivertebrae, spina bifida)
  • Leaky cysts are associated with pleural effusion or pulmonary consolidation
  • Paraesophageal cysts are associated with dysphagia or subnormal weight gain
  • Gastroesophageal cysts are associated with cough, vomiting, fever, pneumonia, empyema
Case reports
Gross description
  • 2 - 10 cm, rounded or irregular, with fibromuscular wall of variable thickness
  • Usually unilocular but may be multiloculated
  • Smooth inner lining, often mucoid contents
Microscopic (histologic) description
  • Squamous, simple columnar, pseudostratified columnar or mixed epithelial lining, usually with some gastric glandular mucosa, overlying a double layer of smooth muscle
  • No cholesterol granulomas, no cartilage