Pneumocystis jirovecii is widely known as an important cause of pneumonia in immunocompromised hosts. It remains a leading cause of opportunistic infection, morbidity and mortality in these patients. Here, a case of severe P. jirovecii pneumonia in a post-renal transplant patient is described. Giemsa and Gomor methenamine silver stain of sputum showed cysts of P. jirovecii. Despite treatment with Trimethoprim- Sulfamethoxazole, the patient developed severe respiratory failure and expired.
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