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Living with Thymus cancer

A rare cancer of the thymus, a small organ in the upper chest, that may cause cough, chest pain, or trouble breathing.

Understanding Thymus cancer

Thymus cancer is a rare cancer of the thymus, a small organ in the upper chest under the breastbone.

The thymus helps the body make a type of white blood cell that protects against infection. Thymus cancer is more likely in people who have other conditions such as myasthenia gravis, lupus, or rheumatoid arthritis. Doctors diagnose it with a physical exam, imaging tests, and a biopsy.

Signs & symptoms

Sometimes there are no symptoms. GARD lists these possible symptoms:

  • A cough that doesn't go away
  • Chest pain
  • Trouble breathing

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What type and stage of thymus cancer do I have?
What are my treatment options, including surgery?
How does my other condition, if I have one, affect my care?

Quick facts

GARD doesn't describe a specific cause. It says thymus cancer is more likely in people who have conditions such as myasthenia gravis, lupus, or rheumatoid arthritis.

Also known as: cancer of the thymus; cancer of thymus; malignant neoplasm of the thymus; malignant neoplasm of thymus; malignant neoplasm of thymus gland; malignant thymus neoplasm

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Thymus cancerGARD ID 23177 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Thymus cancer.

Explore the Thymus cancer blog

Explore research for Thymus cancer

Explore actively recruiting Thymus cancer studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Thymus cancer with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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I can help you find recruiting Thymus cancer studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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