- Megaesophagus is a condition of esophageal dilation and dysmotility. It may be diffuse or regional/segmental and is further classified as:
- Congenital or acquired
- Idiopathic or secondary to other esophageal or nonesophageal diseases.
- Megaesophagus may be the only manifestation of a systemic disease, such as focal myasthenia gravis.