We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Health

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

What is the Peritoneum?

By H. Colledge
Updated: May 17, 2024
Views: 42,826
Share

The peritoneum is a continuous thin sheet of tissue, or membrane, which lines the cavities of the abdomen and pelvis, and covers the surfaces of the organs found within. It produces a lubricating fluid, called serous fluid, which enables the guts to move freely past one another. That part which forms the lining of the walls is called the parietal layer, while the part which covers the pelvic and abdominal organs is known as the visceral layer. Between the visceral and parietal peritoneal layers is a space known as the peritoneal cavity. Blood vessels, lymph vessels and nerves run through the peritoneum, supplying organs, and cancers occurring in the abdomen tend to spread throughout the peritoneal tissue.

In the abdominal and pelvic cavities, there are a large number of organs arranged in a complex way, and the peritoneum helps to hold everything in place. It does this because the visceral layer, surrounding the organs, is attached by strands to the parietal layer, lining the walls, which prevents the guts from moving too far out of position. This is especially important in the case of the intestines, which are approximately 33 feet (about 10 meters) long, and very tightly coiled into place. Some organs, such as the kidneys, are within the abdominal or pelvic cavity but outside the peritoneum, and these are known as retroperitoneal organs.

There is a rich nerve supply to the parietal peritoneum, making it sensitive to pain. This means that any disease or injury occurring within it gives rise to pain which is felt straight away at the affected spot. The visceral peritoneum is not as well-supplied with nerves, and pain is usually only felt as a response to it being stretched. With visceral pain, it is difficult to pinpoint the source of the injury, even more so because pain is often referred to another area of the body.

As the peritoneal cavity is potentially quite large, any disease within it is able to spread extensively. Some cancers originate inside the peritoneal cavity, including malignant peritoneal mesothelioma, a rare tumor arising from the peritoneum. This type of peritoneal cancer is associated with exposure to asbestos, and some early signs are pain and swelling in the abdomen, weight loss and anemia. Treatment uses a combination of approaches, such as surgery, radiotherapy and chemotherapy together with newer, more experimental options. A cure is only possible if the disease is discovered early, while it is still quite localized.

It is more common for cancers to originate elsewhere and for the tumor cells to spread, or metastasize, to the peritoneum. There are numerous examples of cancers progressing in this way, including those affecting the stomach, breast, ovary and lung. Metastasized cancer cells may be treated with a combination of surgery and chemotherapy to extend the patient's life.

Share
WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Editors' Picks

Discussion Comments
By SimpleByte — On Feb 13, 2014

@Ceptorbi - Peritoneum cancer is similar to ovarian cancer. Symptoms of peritoneum cancer can include abdominal pain or swelling, fluid in the abdomen, nausea, diarrhea, diminished appetite, frequent urination, and weight loss or gain. This type of cancer can spread rapidly and reoccur after initial treatment. As with mesothelioma, a variety of treatments are used for primary peritoneum cancer including surgery, radiation, and chemotherapy.

By Ceptorbi — On Feb 13, 2014

What are the symptoms of peritoneum cancers other than mesothelioma? I'm talking about primary peritoneum cancer rather than secondary cancer that originates elsewhere and metastasizes to the peritoneum.

Share
https://www.wisegeek.net/what-is-the-peritoneum.htm
Copy this link
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.