A pseudocyst is an abnormal fluid-filled cavity which is not lined by epithelium. It is this fact that distinguishes it pathologically from a cyst, which is lined by epithelium.
Examples of pseudocysts are:
- 1. Cibas Edmund S. and Barbara S. Ducatman. Cytology. Gulf Professional Publishing, 2003. ISBN: 0702026387, 9780702026386.