pneumocystosis
Findings
No curated finding names pneumocystosis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Human pneumocystosis is caused by an infectious agent, which (after recent nomenclature and taxonomy revisions) is now classed as the fungus Pneumocystis jiroveci. The prevalence is unknown. Pneumocystis jiroveci is an opportunistic infectious agent, developing in immunosuppressed patients. It is an air-borne infection, localized to the lungs. However, extrapulmonary involvement is seen in AIDS patients. The disease manifests progressively with coughing, respiratory problems (dyspnea) and fever, followed by acute respiratory insufficiency and death within a few weeks in untreated cases. The most reliable diagnostic method is bronchoalveolar lavage. The treatment of choice is cotrimoxazole.
Definition from the Mondo Disease Ontology (MONDO:0019121), read 2026-09-29. CC BY 4.0.
Features
23 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.
- Acute infectious pneumoniaHPOHP:0011949
- Very frequent (80% to 99% of cases)
- DyspneaHPOHP:0002094
- Very frequent (80% to 99% of cases)
- FeverHPOHP:0001945
- Very frequent (80% to 99% of cases)
- HypoxemiaHPOHP:0012418
- Very frequent (80% to 99% of cases)
- Pneumocystis jirovecii pneumoniaHPOHP:0020102
- Very frequent (80% to 99% of cases)
- Abnormal total neutrophil countHPOHP:0011991
- Frequent (30% to 79% of cases)
- Combined cystic and ground-glass pattern on pulmonary HRCT
Show the remaining 11
- Pleural effusionHPOHP:0002202
- Frequent (30% to 79% of cases)
- Respiratory failureHPOHP:0002878
- Frequent (30% to 79% of cases)
- Respiratory failure requiring assisted ventilationHPOHP:0004887
- Frequent (30% to 79% of cases)
- Respiratory insufficiencyHPOHP:0002093
- Frequent (30% to 79% of cases)
- Weight lossHPOHP:0001824
- Frequent (30% to 79% of cases)
- Bloodstream infectious agentHPOHP:0031863
- Occasional (5% to 29% of cases)
Where it sits
Other names
6 names
Resolves to: pneumocystosis
- Also called
- PCPPJPPneumocystisPneumocystis carinii pneumoniaPneumocystis jirovecii pneumoniaPneumocystis Pneumonia