Abstract
This 65-year-old woman entered because of a 2-day illness characterized by a pleuritic type of pain in the chest. Examination revealed leucocytosis with juvenile leucocyte and increased red blood cell sedimentation rate. She had no high fever in her course of illness. X-ray of chest showed increased density in right upper and middle area with pneumonic consolidation. Autopsy revealed lobarpneumonia of both side with necrosis and edema. Histologically, many “big vesicular cells” which phagocytized Friedländer's bacillus filled in alveoli. This bacillus obtained from the lung at autopsy was susceptible to polymyxin B and non-susceptible to streptomycin.
