Fatal Pulmonary Failure-A Rare Case of Blastomycosis Induced Acute Respiratory Distress Syndrome: A Case Report and Literature Review.

Blastomycosis is a systemic fungal infection caused by Blastomyces dermatitidis, primarily found in the Ohio and Mississippi River valleys. It often presents nonspecific symptoms, and while pulmonary involvement is common, progression to acute respiratory distress syndrome (ARDS) is rare but severe. This report examines a 55-year-old female patient with multiple comorbidities who developed ARDS due to blastomycosis. Imaging revealed multilobar infiltrates and pleural effusion, with cultures confirming blastomycosis. Despite broad-spectrum antibiotics and antifungal therapy, a delayed diagnosis led to respiratory failure and death. The case emphasizes the diagnostic challenges of blastomycosis, which can mimic conditions like bacterial pneumonia and malignancy. Treatment with amphotericin B is crucial for severe cases, but delays in diagnosis can worsen outcomes. This highlights the necessity for prompt diagnosis and comprehensive management, including early recognition of fungal infections in critically ill patients.