Peritoneal cancer is developed in the abdomen, particularly in a thin layer of tissue that lines the abdomen. It is rare cancer. It can also involve the rectum, bladder, and uterus. The peritoneum is a structure made of epithelial cells and helps the organs inside the abdomen to move smoothly.

Peritoneal cancer originates in the peritoneum, and it is not the same as stomach cancer or intestinal cancer. And also, it does not metastasize from the other organs to the peritoneum but originates directly in the peritoneum, which is why it is called primary peritoneal cancer. The peritoneum ensures and covers the organs in your mid-region, including the:

  • Uterus
  • Rectum
  • Bladder
  • Intestines

The peritoneum likewise delivers a lubricating liquid that permits the organs to move effectively inside the mid-region.

Since its indications regularly go undetected, peritoneal malignant growth is typically analyzed at a late stage.

Each instance of peritoneal cancer is unique. Treatment and viewpoint fluctuate exclusively. New medicines created somewhat recently have improved survival rates.

What are the symptoms of peritoneal cancer?

Similarly likewise with ovarian malignancy, peritoneal cancer can be difficult to identify in the beginning phases. That’s because its symptoms are unclear and difficult to pinpoint.

When clear symptoms do happen, the sickness has regularly advanced. At that point, indications take after those of malignant ovarian growth. Many of these side effects are because of the development of liquid (ascites) in the mid-region.

Peritoneal cancer symptoms may include:

  • Rectal bleeding
  • Abnormal vaginal bleeding
  • Weight gain
  • Nausea or diarrhea
  • Loss of appetite
  • Frequent urination
  • Constipation
  • Feeling of fullness
  • Abdominal discomfort
  • Shortness of breath

As the malignant growth advances, a watery liquid can gather in the stomach hole (ascites), which can cause:

  • Fatigue
  • Stomach pain
  • Shortness of breath
  • Nausea or vomiting

Symptoms of late-stage peritoneal cancer can include:

  • Vomiting
  • Inability to eat or drink
  • Stomach pain
  • Complete bowel or urinary blockage

What are the stages of peritoneal cancer?

When it’s originally analyzed, peritoneal malignant growth is organized by its size, position, and where it’s spread from. It’s likewise given an evaluation, which assesses how rapidly it’s ready to spread.


Primary peritoneal cancer is organized with a similar framework utilized for malignant ovarian growth since the tumors are comparable. Essential peritoneal malignancy is constantly classed as stage 3 or stage 4. Thus, ovarian malignancy has two prior stages.

Stage 3 is divided into three further stages:

  • 3A: The malignancy has spread to lymph nodes outside the peritoneum, or disease cells have spread to the peritoneum outside the pelvis.
  • 3B: The malignant growth has spread to the peritoneum outside the pelvis. The malignancy in the peritoneum is 2 centimeters (cm) or more modest. It might have likewise spread to lymph nodes outside the peritoneum.
  • 3B: The malignant growth has spread to the peritoneum outside the pelvis and. The malignant growth in the peritoneum is bigger than 2 cm. It might have spread to lymph nodes outside the peritoneum or to the outside of the liver or spleen.

In stage 4, malignancy has spread to different organs. This stage is additionally isolated:

  • 4A: Malignant growth cells are found in the liquid that develops around the lungs.
  • 4B: The disease has spread to organs and tissues outside the mid-region, like the liver, lungs, or groin lymph nodes.


The primary malignant growth site arranges secondary peritoneal cancer. At the point when an essential malignancy spreads to another piece of the body, like the peritoneum, it’s generally delegated a phase 4 of the first disease.

A 2013 study announced that right around 15% of individuals with colorectal disease and just about 40% of individuals with stage 2 to 3 stomach malignant growth had peritoneal inclusion.

What is the difference between primary and secondary peritoneal cancer?

The designation of primary and secondary allude to where the malignant growth began. The names aren’t a proportion of how genuine the malignant growth is.


Primary peritoneal malignant growth begins and creates in the peritoneum. It normally just influences ladies and seldom influences men.

Primary peritoneal malignancy is firmly identified with epithelial ovarian disease. Both are dealt with similarly and have a comparative standpoint.

An uncommon sort of essential peritoneal disease is dangerous peritoneal mesothelioma.


For the most part, secondary peritoneal cancer begins in another organ in the midsection and afterward spreads (metastasizes) to the peritoneum. Optional peritoneal malignancy can begin in the:

  • Appendix
  • Rectum
  • Colon
  • Small bowel
  • Stomach
  • Bladder
  • Fallopian tubes
  • Ovaries

Secondary peritoneal cancer can influence both genders. It’sHowever, it’s more normal than primary peritoneal malignancy.

Specialists gauge somewhere in the range of 15 and 20 percent of individuals with colorectal malignant growth will create metastases in the peritoneum. Likewise, around 10 to 15 percent of individuals with stomach disease will create metastases in the peritoneum.

When the disease metastasizes from its unique site, the new site will have similar kinds of malignancy cells as the underlying site.

What causes peritoneal cancer?

The cause of peritoneal cancer isn’t known.

What increases the risk of peritoneal cancer?

For primary peritoneal cancer, risk factors include:

  • Age. As you get older, your risk increases.
  • Genetics. A family history of ovarian or peritoneal cancer increases your risk. Carrying the BRCA1 or BRCA2 gene mutation or one of the genes for
  • Lynch syndrome also increases your risk.
  • Hormone therapy. Taking hormone therapy after menopause slightly increases your risk.
  • Weight and height. Being overweight or obese increases your risk. Those who are tall are at increased risk. Avoid alcohol and get fit again using our one punch man workout guide.
  • Endometriosis. Endometriosis increases your risk.

What lessens the risk of peritoneal cancer?

Factors associated with decreased risk of peritoneal or ovarian cancer include:

  • Tubal ligation, fallopian tube removal, or ovary removal
  • Breastfeeding
  • Bearing children
  • Taking birth control pills

Note that ovary removal lessens the risk of peritoneal cancer but doesn’t completely remove it.

How do doctors diagnose peritoneal cancer?

After getting some information about manifestations, your primary care physician will survey your clinical history and direct a physical test, which includes inspecting for anomalies in:

  • Colon and rectum
  • Bladder
  • Stomach
  • Fallopian tubes
  • Ovaries
  • Vagina
  • Uterus

Diagnosis of both primary and secondary peritoneal malignant growth is troublesome in the beginning phases. This is because the indications are ambiguous and can undoubtedly be credited to different causes.

Regularly peritoneal malignant growth is just found during a medical procedure to eliminate a known tumor somewhere in the mid-region.

What tests are used to analyze peritoneal malignancy?

  • Imaging test of the mid-region and pelvis. This may show ascites or developments. Tests incorporate CT scan, ultrasound, and MRI. Nonetheless, peritoneal malignancy is hard to image utilizing CT and MRI scans.
  • Biopsy of a space that glances abnormal in a scan, including expulsion of liquid from ascites, to search for destructive cells. Examine the advantages and disadvantages of this with your primary care physician. The procedure also risks seeding the abdominal wall with cancerous cells.
  • Blood tests to search for synthetic substances that might be raised in peritoneal cancer, for example, CA 125, a compound made by tumor cells. A more up-to-date blood marker is HE4. It’s more outlandish than CA 125 to be raised by noncancerous conditions.
  • Laparoscopy or laparotomy. These are negligibly obtrusive strategies to gaze straight toward the peritoneum. They’re considered the “best quality level” in finding.

Research into better and prior techniques for analysis for peritoneal malignancy is continuous.

A 2017 article proposed the improvement of a “fluid biopsy.” This alludes to a blood test that could search for a mix of tumor biomarkers. This would empower prior treatment for certain individuals.

How to tell the difference between peritoneal cancer and ovarian cancer in diagnosis?

Peritoneal malignant growth is the same as cutting-edge epithelial ovarian disease. Both include similar kinds of cells. Therefore, measures have been created to recognize them by the Gynecologic Oncology Group.

It’s viewed as an essential peritoneal disease if the:

  • Ovaries seem typical
  • Carcinogenic cells aren’t on the ovary surface
  • Tumor type is transcendently serous (delivering a liquid)

Two little studies revealed that the normal period of individuals with essential peritoneal malignancy was more established than those with epithelial ovarian disease.

How to treat peritoneal cancer?

You’re probably going to have a treatment group including:

  • palliative care specialists
  • specialized nurses
  • a pain specialist
  • a gastroenterologist
  • a pathologist
  • a radiologist
  • an oncologist
  • a surgeon

Therapy for the primary peritoneal disease is like that for ovarian malignancy. For both primary and secondary peritoneal malignant growth, singular treatment will rely upon the area and size of the tumor and your overall well-being.

Therapy for secondary peritoneal malignancy likewise relies upon the situation with the essential disease and your reaction to treatment for it.


Surgical procedure is normally the initial step. A specialist will eliminate however much of the malignant growth as could be expected. They may eliminate:

  • Your uterus (hysterectomy)
  • Your ovaries and fallopian tubes (oophorectomy)
  • The layer of greasy tissue close to the ovaries (omentum)

Your specialist will eliminate any unusual glancing tissue in the stomach region for additional testing.

Advances in the accuracy of careful strategies, known as a cytoreductive medical procedure (CRS), have empowered specialists to eliminate a greater amount of the carcinogenic tissue. This has improved the viewpoint of individuals with peritoneal malignant growth.


Your doctor may utilize chemotherapy before the surgical procedure to wither the tumor in anticipation of the medical procedure. They may likewise utilize it after medical procedure to execute any excess carcinogenic cells. A fresher strategy for conveying chemotherapy after the medical procedure has expanded its viability much of the time.

The method utilizes heat joined with chemotherapy conveyed straightforwardly to the peritoneal malignant growth site. It’s known as hyperthermic intraperitoneal chemotherapy (HIPEC). This is a one-time treatment given straightforwardly after a surgical procedure.

The blend of CRS and HIPEC has “altered” peritoneal disease treatment, as per numerous specialists. It isn’t completely acknowledged as a standard treatment yet. This is because there aren’t randomized patient preliminaries with control gatherings.

HIPEC isn’t suggested when there are metastases outside the mid-region and in some different circumstances.  All chemotherapy has results. Examine what these may be and how to deal with them with your treatment group.

Targeted therapy

Sometimes, a focus on treatment medication might be utilized. These medications are pointed toward halting malignancy cells without hurting ordinary cells. Directed treatments incorporate the accompanying:

Monoclonal antibodies target substances on cells that advance disease cell development. These might be joined with a chemotherapy drug.

PARP (poly-ADP ribose polymerase) inhibitors block DNA fix.

Angiogenesis inhibitors forestall vein development in tumors.

Hormonal treatment, radiation treatment, and immunotherapy may likewise be utilized now and again for essential peritoneal malignancy.

What’s the prognosis of peritoneal malignant?

Prognosis of primary peritoneal malignant growth is ideal if an oncologist takes out all disease and a gynecologic specialist treats you. These specialists have exceptional information on these disorders.

Recurrence after therapy is average with peritoneal malignant growth. Peritoneal cancer growth can spread rapidly because the peritoneum is rich in blood and lymph through which it can travel. That is because this malignant growth is regularly analyzed in a high-level stage. You may require more than one round of chemotherapy or different medical procedures. Your physician will intently watch you after treatment.

Make sure to look for help for yourself as you go through treatment and recuperating.

Is ovarian cancer related to peritoneal cancer?

Both of the cancers look very similar to one another. Because the peritoneum is linked with epithelial cells, which are very similar to ovaries, it is also lined with epithelial cells. Because of the similar lining, both cancers present similar symptoms in the patients, and doctors treat both cancers in much the same way.

Irrespective of the similarities between these cancers, you can have peritoneal cancer if your ovaries have been removed. It usually affects any organ in the abdominal cavity and on the peritoneum of the organs.

The underlying causes of peritoneal cancer are unknown to science, but different researchers suggest that it may be during fetal development as some ovarian tissue implants lefts in the abdomen. And some theories suggest that changes in the peritoneum that make it more like the ovaries.


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Amy Revene M.B.B.S.
Amy Revene M.B.B.S. graduated from the University of Sharjah. She is currently working as a General Physician at New Hope Medical Center. Amy has a passion for research and offers her expertise and opinions helping people in their quest to lead healthy, happy lives.

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