thymoma
Findings
No curated finding names thymoma yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A neoplasm arising from the epithelial cells of the thymus. Although thymomas are usually encapsulated tumors, they may invade the capsule and infiltrate the surrounding tissues or even metastasize to distant anatomic sites. The following morphologic subtypes are currently recognized: type A, type B, type AB, metaplastic, micronodular, microscopic, and sclerosing thymoma. Thymomas type B are further subdivided into types B1, B2, and B3. Thymoma type B3 usually has the most aggressive clinical course.
Definition from the Mondo Disease Ontology (MONDO:0006456), read 2026-09-29. CC BY 4.0.
Features
37 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Abnormal lymphocyte physiologyHPOHP:0031409
- Frequent (30% to 79% of cases)
- Abnormal lymphocyte proliferationHPOHP:0031378
- Frequent (30% to 79% of cases)
- Chest painHPOHP:0100749
- Frequent (30% to 79% of cases)
- Weight lossHPOHP:0001824
- Frequent (30% to 79% of cases)
- Abnormal mediastinum morphologyHPOHP:0045026
- Occasional (5% to 29% of cases)
- Anti-neuromuscular Junction acetylcholine receptor antibody positivityHPOHP:0030208
- Occasional (5% to 29% of cases)
Show the remaining 25
- ImmunodeficiencyHPOHP:0002721
- Occasional (5% to 29% of cases)
- Muscle weaknessHPOHP:0001324
- Occasional (5% to 29% of cases)
- NeoplasmHPOHP:0002664
- Occasional (5% to 29% of cases)
- Night sweatsHPOHP:0030166
- Occasional (5% to 29% of cases)
- Abnormality of the nervous systemHPOHP:0000707
- Very rare (1% to 4% of cases)
- Aplastic anemiaHPOHP:0001915
- Very rare (1% to 4% of cases)
Where it sits
- A kind of
Other names
4 names
Resolves to: thymoma
- Also called
- primary thymic epithelial neoplasmprimary thymic epithelial tumorprimary thymic epithelial tumourthymoma (disease)