How long is the average life expectancy for peritoneal cancer?

Peritoneal cancer is a malignant tumor that occurs in the peritoneum and is divided into two types: primary and secondary. Primary peritoneal cancer is less common, while secondary peritoneal cancer is mostly caused by metastasis of other cancers (such as ovarian cancer, gastric cancer, colorectal cancer, etc.) to the peritoneum. A patient's lifespan varies based on the severity of the condition, treatment methods, individual health status and many other factors.

1.Survival time of untreated patients: If patients with peritoneal cancer do not receive any treatment, especially those with advanced stage, the survival time is usually shorter. Studies have shown that the median survival of these patients is only 3 to 6 months. This is because peritoneal cancer can spread rapidly, leading to serious consequences such as increased ascites and impaired organ function.

2.Effects of Treatment: For patients who receive active treatment, life may be significantly longer. Cytoreductive surgery (CRS) combined with hyperthermic perfusion chemotherapy (HIPEC) is a key method to treat peritoneal cancer, especially for peritoneal metastasis caused by gastrointestinal cancer. Studies have shown that the median survival period of patients receiving this treatment can reach 18 to 30 months, and the 5 annual survival rate of some patients is close to 20%-50% . The addition of targeted therapy and immunotherapy has further improved patient survival expectations, especially when genetic mutations are clear.

3.Individual differences and pathological factors: The patient's health status, cancer stage, pathological characteristics of cancer cells, etc. have a significant impact on life span. Younger, healthier patients tend to be better able to tolerate surgery and chemotherapy and therefore have a better prognosis. Patients with advanced disease or severe comorbidities fare less well.

4.Quality of life and psychological support: Good psychological state, family support and palliative care can improve the patient's quality of life, thereby indirectly affecting life span. These include controlling symptoms, improving nutrition, and maintaining moderate exercise.

In general, the lifespan of patients with peritoneal cancer varies significantly depending on the condition and treatment. Early diagnosis and effective treatment are the keys to improving prognosis.

(Click to view an introduction to drugs for the treatment of peritoneal cancer.)

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Reference materials

1.National Cancer Institute (NCI): https://www.cancer.gov/

2.American Society of Clinical Oncology (ASCO): https://www.asco.org/

3.UpToDate - Peritoneal Carcinomatosis: https://www.uptodate.com/