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Serratia marcesens

Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 22 September 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.


● Common commensal, gram negative rod (Wikipedia)
● Rare nosocomial infection; most patients have severe underlying disease (eMedicine)
● Acute necrotizing inflammation with microabscesses, often with vasculitis
● In neutropenic patients, intra-alveolar fibrin and hemorrhage with hyaline membranes

Case reports

● 5 year old boy with autoimmune neutropenia and lung abscess (Acta Paediatr Jpn 1995;37:377)

Micro images

Characteristic red color of Serratia-infected tissue

End of Lung-nontumor > Infections > Serratia marcesens

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