Abstract
Pneumocystis jiroveci Pneumonia (PCP) is a common cause of opportunistic lung infection and is associated with high mortality in immunocompromised patients. Few reports describe pneumocystis jiroveci as a causative agent of tyrosine kinase inhibitor or blinatumomab related infections. Case presentation A 64-year-old man with philadelphia chromosome positive acute lymphoblastic leukemia (ALL) presented to the intensive care unit with intermittent high fever and shortness of breath. Three cycles of tyrosine kinase inhibitor (TKI) with blinatumomab therapy were given in recent 4months. Next-generation sequencing of bronchoalveolar lavage fluid and peripheral blood showed pneumocystis jiroveci. After trimethoprim- sulfamethoxazole treatment and subsequent mechanical ventilation, the infection was controlled successfully. Due to susceptibility and early onset of PCP in ALL patients received TKI combined with blinatumomab therapy, so we should be alert to PCP when pulmonary infection occurred.
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