“…Direct identification of the characteristic spherules from sputum, bronchial washing, BAL, and tissues by potassium hydroxide, cytologic preparation, or special stains is the most rapid way to confirm the diagnosis. Unfortunately, the sensitivity of direct microscopic studies of sputum samples, bronchial washing, or BAL is low, ranging from 10% to 40% [17,18]. However, cultures from these specimens are reportedly more sensitive, especially samples from patients with chronic progressive pneumonia [13].…”