Differing chest imaging patterns in three patients are caused by one microbe.

*From the ACCP-SEEK program, reprinted with permission. Items are selected by Department Editors Richard S. Irwin, MD, FCCP, and John G. Weg, MD, FCCP. For additional information about the ACCP-SEEK program, phone 1-847-498-1400. Correspondence to: Richard S. Irwin, MD, FCCP, University of Massachusetts Medical School, Pulmonary and Critical Care Medicine, 55 Lake Avenue North, Worcester, MA 01655-0330; e-mail: [email protected] Figure 1. Figure 2.