Pasteurella Multocida Pneumonia Diagnosed 5 Months After a Cat Bite
Abstract
Abstract Human infection with Pasteurella, a zoonotic disease that impacts livestock and birds, is rare. After local skin and soft tissue infections, pneumonia is the next most common manifestation of human pasteurellosis. A 68-year-old man with a prolonged smoking history and severe chronic obstructive pulmonary disease (COPD) presented to pulmonary clinic with new left upper and lower lobe pulmonary nodules found on his annual lung cancer screening CT scan. Patient reported several days of increased shortness of breath and sputum production which resolved with a short course of doxycycline. He was asymptomatic at the time of the clinic visit and the decision was made to repeat imaging to evaluate the pulmonary nodules. A repeat CT chest demonstrated almost complete resolution of the nodules, and it was presumed that the patient had an atypical pneumonia that had resolved. One month later, the patient underwent an elective bronchoscopy for endobronchial valve placement for his COPD. During the procedure, he was found to have significant purulent discharge in the left bronchi and collapse of the left upper lobe. Bronchoalveolar lavage and endobronchial biopsies were obtained and sent for culture, which demonstrated heavy growth of Pasteurella multocida. On further history, patient reported a cat bite several months prior from a cat he had adopted from the shelter, which was suspected to be the cause of his infection. He was successfully treated with a one-week course of…
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