Symptoms

Malignant Mesothelioma: Symptoms

Choose a preferred language


What are the symptoms of malignant mesothelioma?

Mesothelioma seldom causes symptoms in its early stages. This means when it's small and hasn't spread. In fact, this type of cancer often doesn't cause symptoms until it's advanced. Symptoms depend on where the cancer is.

Pleural mesothelioma (in the chest) can cause:

  • Breathing problems, such as shortness of breath
  • Cough
  • Chest or lower back pain
  • Trouble swallowing
  • Hoarseness
  • Swelling in the face and arms

Peritoneal mesothelioma (in the belly) can cause:

  • Pain in your belly
  • Swelling or fluid buildup in your belly
  • Nausea and vomiting
  • Constipation

General mesothelioma symptoms include:

  • Weight loss without trying
  • Extreme tiredness (fatigue)
  • Fever
  • Night sweats
  • Blood clots


When to see your doctor

Many of these symptoms can be caused by other health problems. So it's important to see a doctor if you have these symptoms. Only a doctor can tell if you have malignant mesothelioma.

Featured in

© 2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare provider's instructions.

Find the right providers for your needs.

CalOptima Health works with thousands of Orange County providers, including doctors, specialists, health networks, medical groups and more.

Find a Doctor

See Member Health Rewards

CalOptima Health offers health rewards to eligible CalOptima Health members who take an active role in their well-being!

View available rewards
Related Articles
Read article
Oncology
Head and Neck Cancer: Symptoms

Many of the symptoms of head and neck cancer can be caused by other health problems. But it's important to see your healthcare provider if you have these symptoms.

Read article
Oncology
Cancer Treatment and Bladder Inflammation (Cystitis)

Cystitis is a common side effect of chemotherapy for some cancers. It can be serious and cause bleeding in your bladder, increasing your risk for infection.

Read article
Oncology
Thyroid Cancer: Symptoms

A persistent cough is one of the most common symptoms of thyroid cancer. Read on to learn more.

Read article
Oncology
Cancer of Unknown Primary: Symptoms

If you have cancer of unknown primary (CUP), your symptoms depend on where in your body the cancer forms.