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Rare extension of pancreatic pseudocyst with Mycobacterium abscessus into the iliopsoas muscle
  1. Justin David Mark1,
  2. Travis Park2,
  3. Virginia Velez Quinones2 and
  4. Shaun Isaac2
  1. 1Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, Florida, USA
  2. 2Department of Internal Medicine, HCA Florida JFK Hospital, Atlantis, Florida, USA
  1. Correspondence to Justin David Mark; jm5047{at}


Pancreatic pseudocyst is a well-known complication of both acute and chronic pancreatitis. Although extension into other anatomical sites is common, extension into the retrofascial space causing an iliopsoas abscess is exceedingly rare. Although its low incidence creates a diagnostic challenge for clinicians, early diagnosis is essential to prevent significant complications and poor patient outcomes. We present a case of iliopsoas abscess with unusual culture fluid growth in the setting of acute on chronic pancreatitis secondary to extension of a pancreatic pseudocyst. We also offer a brief review of the literature and pathophysiology of the condition.

  • Infections
  • Gastrointestinal system
  • Infection (gastroenterology)
  • Pancreatitis
  • Pancreas and biliary tract

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  • Contributors JDM, TP and VVQ contributed to conception and design of the study and manuscript. JDM drafted the original manuscript and performed the critical revisions. JDM, TP and VVQ contributed to the acquisition, analysis and interpretation of the data and the literature review. SI, TP and VVQ contributed by offering clinical guidance and expertise through the writing process and editing of the manuscript. JDM, TP, VVQ and SI reviewed the final manuscript and agree to its submission and publication.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

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