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 (no͞o′mə-sĭs′tĭs, nyo͞o′-)
Any of a group of fungi of the genus Pneumocystis, especially P. jirovecii, which causes pneumonia in immunocompromised individuals.

[From New Latin Pneumocystis, genus name : pneumo- + New Latin cystis, cyst; see cyst.]


(Pathology) any protozoan of the genus Pneumocystis, esp P. carinii, which is a cause of pneumonia in people whose immune defences have been lowered by drugs or a disease
References in periodicals archive ?
2-4) Hospitalization due to chronic obstructive respiratory disease, lung cancer, and bacterial pneumonia has become more frequent than pulmonary infections due to Pneumocystis jirovecii, tuberculosis, and cytomegalovirus.
Pneumocystis jirovecii pneumonia (PCP) is a life-threatening opportunistic disease that poses a particular threat in healthcare units that manage patients with oncohematologic conditions, patients having received solid organ transplants (SOTs), and HIV-infected patients.
Objective: To assess the predisposing immunocompromised states, administration of pneumocystis jirovecii pneumonia prophylaxis, the disease course and outcomes of patients with pneumocystis jirovecii pneumonia.
Background: Although radiological features of pneumocystis pneumonia (PCP) in non-Acquired Immune Deficiency Syndrome (AIDS) immunocompromised patients have been reported by other authors, there were no studies on the radiological stages of PCP previously.
Global Markets Direct's, 'Pneumocystis Infection - Pipeline Review, H1 2016', provides an overview of the Pneumocystis Infection pipeline landscape.
Radiologic Diagnosis: Pneumocystis jiroveci pneumonia-related bilateral pneumothoraces.
Pneumocystis jirovecii is a pathogen causing a life-threatening infection, Pneumocystis Pneumonia (PCP) in immunocompromised hosts.
Pneumocystis pneumonia (PCP) is one of the most common opportunistic infections in HIV-infected patients with a substantial mortality rate.
USPRwire, Sun Nov 01 2015] Global Markets Direct's, 'Pneumocystis Infection - Pipeline Review, H2 2015', provides an overview of the Pneumocystis Infection's therapeutic pipeline.
Pneumocystis jirovecii (anteriormente conocido como la forma humana de P.
The first known successful trial of penicillin was a case series of 5 patients with eye infections performed in 1930, (2) and the first published description of acquired immunodeficiency syndrome involved case reports of 5 patients with pneumocystis carinii pneumonia.
We describe a patient with VAP caused by another opportunistic organism, Pneumocystis jirovecii, in the absence of traditional risk factors for Pneumocystis pneumonia (PCP).