A 56-year-old woman with no significant past medical history presented to the emergency department with worsening shortness of breath over 8 months. She had no prior history of tobacco use. Physical examination was notable for bronchial breath sounds in both lungs with oxygen saturation of 93% on 3 liters of supplemental oxygen. A computed tomographic angiogram noted innumerable pulmonary nodules in a diffuse pattern.
What is the most likely diagnosis for this presentation?
a. Non–small-cell lung cancer
c. Langerhans cell histiocytosis
e. Septic embolization
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