Stenosis

Stenosis is the narrowing of any canal-like structure, such as a blood vessels, the oesophagus or the spinal canal.

1. Degenerative diseases
2. Congenital anomalies of alimentary tract

1. Spinal stenosis
2. Pulmonic stenosis in animals
3. Oesophageal stenosis in animals
4. Aortic stenosis in animals

1. Williams syndrome