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Foregut Malformation

- Enteric (foregut) duplication cysts,
- Neurenteric cysts,
- Bronchogenic cysts
- Pulmonary sequestrations, both intralobar and extralobar.

Esophageal Duplication Cysts: Differential Diagnosis

In the neck:

Lymphatic malformation (past terminology cystic hygroma now out of favor)
Branchial cleft cyst
Thyroglossal duct cyst
Atypical abscess

More distally:

Neurogenic tumor
Anterior meningocele
Bronchogenic cyst
Neurenteric cyst

Bronchogenic Cysts: Differential Diagnosis

The differential diagnosis depends upon the anatomic location of the cyst (where it is in the mediastinum or whether or not the cyst is intraparenchymal), and includes:

Cystic teratoma
Thymic cyst
Esophageal duplication cyst
Anterior meningocele
Neurenteric cyst
Congenital cystic adenomatoid malformation
Congenital lobar emphysema
Pneumonia (with or without atelectasis)