Pneumocystis jirovecii pneumonia in an HIV-infected patient mimicking acute eosinophilic pneumonia: a case report with a review of the literature

A case of

Pneumocystis jirovecii pneumonia (PCP) in patients with acquired immune deficiency syndrome (AIDS) shows eosinophilic pneumonia like condition. The detailed mechanisms how AIDS-associated PCP causes eosinophilic pneumonia has not been elucidated, but it has been suggested that beta-D-glucan, a major component of Pneumocystis jirovecii, and T helper type 2 immunity may be involved in the mechanism of eosinophilia in the lung. We experienced the case who developed an eosinophilic pneumonia-like condition in a patient with AIDS-associated PCP, whose clinical course indicated the importance of TARC/CCL17 but not IL-4 and IL-5 as involved in eosinophilia caused by HIV and Pneumocystis jirovecii infection.

Acute Eosinophilic Pneumonia Due to Vaping-Associated Lung Injury

A case is described of a 29-year-old female who presented with acute hypoxic respiratory failure due to acute eosinophilic pneumonia, associated with the use of electronic cigarettes to vape tetrahydrocannabinol (THC), together with the contemporary clinical understanding of the syndrome of electronic-cigarette associated lung injury (EVALI). Attention is drawn to acute eosinophilic pneumonia as a potential consequence of vaping-associated lung injury to understand the diagnostic evaluations and therapeutic interventions for acute eosinophilic pneumonia associated with vaping THC.

Tension Pneumothorax Following Pneumocystis jirovecii Pneumonia

Pneumocystis jirovecii pneumonia (PJP) is one of the most common causes of respiratory failure in patients with human immunodeficiency virus (HIV) infection, for which the mortality rate is approximately 10%. Spontaneous pneumothorax as a presentation of PJP has been reported with rising frequency, but tension pneumothorax as a presentation of PJP is rare. We reported a case of a middle-aged male with HIV infection who presented to our hospital with acute worsening shortness of breath and was later diagnosed with tension pneumothorax due to PJP. Physicians should suspect pneumothorax in patients with a clinical presentation of PJP who show rapid progressive respiratory deterioration.