{
  "abstract": "We report the case of a man in his 70s who presented with constitutional symptoms and intermittent confusion, ultimately diagnosed with a large, complex retroperitoneal and extraperitoneal abscess. He had a background of recurrent urinary tract infections over the preceding year. Initial imaging revealed a multi-loculated collection. Surgical incision and drainage yielded 1000 mL of pus, and cultures identified multiple strains of Escherichia coli required tailored antibiotic therapy. Interval imaging revealed a residual collection requiring a second surgical intervention. Further inpatient investigations also raised suspicion for underlying prostate carcinoma. The patient made a full recovery and demonstrated complete resolution of inflammatory markers.This case illustrates the diagnostic complexity of deep-seated polymicrobial infections presenting with non-specific constitutional symptoms and underscores the need to consider multistrain pathogens and underlying urological pathology in patients with a history of recurrent urinary tract infections. It also underscores the value of holistic assessment and management during and after hospital admission.",
  "authors": [
    {
      "affiliations": [
        "Acute & General Medicine, Borders General Hospital, Melrose, Scotland, UK"
      ],
      "name": "Sue Pwint Phyu"
    },
    {
      "affiliations": [
        "Acute & General Medicine, Borders General Hospital, Melrose, Scotland, UK"
      ],
      "name": "Husni Mubarak Zainal"
    },
    {
      "affiliations": [
        "Acute & General Medicine, Borders General Hospital, Melrose, Scotland, UK"
      ],
      "name": "Ahlain Mar"
    },
    {
      "affiliations": [
        "General Surgery, Borders General Hospital, Melrose, Scotland, UK"
      ],
      "name": "Jamie Young"
    }
  ],
  "title": "Complex intra-abdominal abscess involving retroperitoneal and extraperitoneal compartments with multiple E. coli strains",
  "uid": "44becf64-ea18-5cb2-93fd-d15ac78f7960"
}