<i>Escherichia coli</i> community‐acquired necrotizing pneumonia, an uncommon presentation of a common pathogen: A case report and literature review

Community-acquired necrotizing pneumonia is a rare but potentially fatal infection, mainly caused by specific pathogens such as <i>Streptococcus pneumoniae</i>, <i>Staphylococcus aureus</i>, <i>Klebsiella pneumoniae</i>, <i>Haemophilus influenzae</i>, and <i>Pseudomonas aeruginosa</i>. <i>Escherichia coli</i> is extremely rare as a pathogen for community-acquired necrotizing pneumonia, typically accompanied with bloodstream infection. Here, we report an unusual case of a 60-year-old man with uncontrolled diabetes mellitus and no bloodstream infections, who had severe necrotizing <i>E. coli</i> pneumonia leading to massive hemoptysis and death. Clinicians should be aware of this pathogen in respiratory infections, as it requires immediate pathogen detection and usually aggressive antibiotic treatment.