‹ Knowledge base
Browse the corpus
Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.
1 passage
abstractpubmed· Abstract 2021· item PMID:34625184
A 51-Year-Old Man With a Large Posterior Mediastinal Mass. CASE PRESENTATION: A 51-year-old White male never-smoker presented with intermittent cough and progressive dyspnea. His symptoms started after an exposure to bat guano while cleaning his attic approximately 9 months earlier. He has received several courses of antibiotic and corticosteroid for these symptoms, with short-term relief.