Babak Hooshmand1, Riad Khatib1, Ameer Hamza2, Daniel Snower2, Anthony L Alcantara3. 1. MD, Division of Infectious Diseases, Department of Medicine, Ascension St John Hospital, 19251 Mack Ave, Suite 340, Grosse Pointe Woods, MI 48236, USA. 2. MD, Department of Pathology, Ascension St John Hospital, 19251 Mack Ave, Suite 340, Grosse Pointe Woods, MI 48236, USA. 3. MD, Department of Radiology, Ascension St John Hospital, 19251 Mack Ave, Suite 340, Grosse Pointe Woods, MI 48236, USA.
Abstract
INTRODUCTION: Fusobacterium nucleatum is a Gram-negative, obligate anaerobic bacterium which predominantly resides within the oral cavity and causes acute abscesses and venous thrombosis, primarily in the head and neck region, but could have unique clinical presentations in different anatomical regions of the body. CASE REPORT: We present a case of subacute liver abscesses extending to the lung. The histopathological examination showed extensive necrosis and fibrosis. The chronic course, extensive fibrosis and extension across the anatomic barriers were suggestive of actinomycosis. two sets of blood cultures grew Fusobacterium nucleatum, only 16s rRNA analysis of the liver tissue and pleural fluid revealed F. nucleatum DNA without other organisms. The clinical and pathological features of our case illustrate that F. nucleatum may mimic actinomycosis. CONCLUSIONS: This case illustrates that F. nucleatum should be considered in patients with subacute infections with extensive fibrosis that crosses anatomic barriers, mimicking actinomycosis.
INTRODUCTION: Fusobacterium nucleatum is a Gram-negative, obligate anaerobic bacterium which predominantly resides within the oral cavity and causes acute abscesses and venous thrombosis, primarily in the head and neck region, but could have unique clinical presentations in different anatomical regions of the body. CASE REPORT: We present a case of subacute liver abscesses extending to the lung. The histopathological examination showed extensive necrosis and fibrosis. The chronic course, extensive fibrosis and extension across the anatomic barriers were suggestive of actinomycosis. two sets of blood cultures grew Fusobacterium nucleatum, only 16s rRNA analysis of the liver tissue and pleural fluid revealed F. nucleatum DNA without other organisms. The clinical and pathological features of our case illustrate that F. nucleatum may mimic actinomycosis. CONCLUSIONS: This case illustrates that F. nucleatum should be considered in patients with subacute infections with extensive fibrosis that crosses anatomic barriers, mimicking actinomycosis.
Authors: Nicola Segata; Susan Kinder Haake; Peter Mannon; Katherine P Lemon; Levi Waldron; Dirk Gevers; Curtis Huttenhower; Jacques Izard Journal: Genome Biol Date: 2012-06-14 Impact factor: 13.583