Invasive infections by Achromobacter denitrificans in people who are immunocompromised may be fatal. Most infections develop during stay in hospitals with primary uncomplicated bacteremia, pneumonia and catheter-associated infections being particularly frequent presentations. The prevalence rate of A. xylosoxidans has increased in recent years. We present a unique case of Achromobacter denitrificans causing an infection progressing to a pancreatic pseudocyst in an immunocompetant adult man.