Actinomycosis mimicking pancreatic neuroendocrine tumor. Case report and review of the literature

Abstract

Background Abdominal actinomycosis is an uncommon subacute or chronic inflammatory disease due to a filamentous, gram-positive, anaerobic bacterium: Actinomyces israelii. The pathogen invades surrounding tissues, spreads by contiguity causing a suppurative and granulomatous inflammation with formation of abscess.