BMJ Case Reports 2017; doi:10.1136/bcr-2016-217377

Aggregatibacter actinomycetemcomitans pneumonia with chest and abdominal wall involvement

  1. Nico van 't Hullenaar4
  1. 1 Canisius Wilhemina Ziekenhuis, Nijmegen, The Netherlands
  2. 2 VU medisch centrum School of Medical Sciences, Amsterdam, The Netherlands
  3. 3 Jeroen Bosch Ziekenhuis, Den Bosch, The Netherlands
  4. 4 Ziekenhuis Bernhoven, Uden, The Netherlands
  1. Correspondence to Mrs Iris Storms, irisstorms{at}
  • Received 19 October 2016
  • Revised 24 March 2017
  • Accepted 3 April 2017
  • Published 21 April 2017


A 54-year-old man presented with a productive cough, chest pain, fever and weight loss. Initial analysis revealed a palpable chest wall mass and consolidation in the left lower lobe and pleural abnormalities on imaging. At that point no infectious cause or malignancy was identified. Microbiological analysis of a needle biopsy from a newly developed abdominal wall mass revealed growth of Aggregatibacter actinomycetemcomitans. The patient was successfully treated with antibiotic therapy for 1 year. Aggregatibacter actinomycetemcomitans is a Gram-negative coccobacillus and is part of the normal oral flora. It is capable of causing infections in humans including periodontitis, soft tissue abscesses and systemic invasive infections, most commonly endocarditis.


  • Contributors We state that all authors contributed to this case report. The idea for the article was from IS, MB, PS and NH. The literature search was performed by IS and MB. IS, MB, PS and NH wrote the article. The guarantor is IS.

  • Competing interests None declared.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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