When to consider Pneumocystis jirovecii prophylaxis in HIV-negative patients.

Clinicians should be aware of the risk of opportunistic infections in patients who are immunocompromised. Opportunistic infections such as Pneumocystis jirovecii commonly are associated with HIV/AIDS, but less commonly considered in patients receiving immunosuppressive and/or immunomodulating therapies. This case report focuses on the management of an opportunistic infection in an HIV-negative patient on immunosuppressive medications for lymphoma and exacerbation of pulmonary fibrosis.