Peritoneal sample:

The peritoneum is the membrane lining the abdominal cavity.
- Reviewed last on: 8/22/2008
- Christian Stone, MD, Division of Gastroenterology, Washington University in St. Louis School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.