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Living with Immunodeficiency with thymoma

A rare adult-onset immune condition (Good syndrome) with a benign thymus tumor and frequent infections.

Understanding Immunodeficiency with thymoma

Immunodeficiency with thymoma, also called Good syndrome, is a rare immune disorder of adulthood with low antibodies and a benign tumor of the thymus (thymoma).

It is suspected when a person has low antibody levels (hypogammaglobulinemia) and low B cells along with a thymoma on a chest X-ray. People get frequent infections of the sinuses and lungs, including some from germs that rarely harm healthy people.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Cough
  • Trouble breathing
  • Frequent urinary tract infections
  • Droopy upper eyelid
  • Weakness that comes with fatigue
  • Voice changes

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

    Specialists who may be involved include allergy and immune system specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    Immune Deficiency Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Allergy and immune system specialists (allergists / immunologists)
Expert care
Expert lists: Immune Deficiency Foundation
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 Immune Deficiency Foundation and other patient organizations
  • 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
Which tests found the thymoma and low antibody levels?
How are the sinus and lung infections managed?
How often should my immune levels be checked?

Quick facts

Symptoms usually startAdult

The cause of Good syndrome remains unknown.

Also known as: good syndrome; good's syndrome; thymoma with hypogammaglobulinemia; thymoma-immunodeficiency; thymoma-immunodeficiency syndrome

Patient organizations

Source: NIH GARD · Immunodeficiency with thymomaGARD ID 8622 · 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 Immunodeficiency with thymoma.

Explore the Immunodeficiency with thymoma blog

Explore research for Immunodeficiency with thymoma

Explore actively recruiting Immunodeficiency with thymoma studies with HealthSpark.

HealthSpark

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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

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