{
  "abstract": "We report the case of a woman in her mid-60s with a 9 month history of a lesion to the right posterolateral flank presenting as a gradually enlarging, inflamed pink papule, which developed into a fistulating sinus tract discharging onto the skin. Radiological investigation identified a ‘dropped’ gallstone as the cause of this. ‘Dropped’ or retained gallstones are a common complication in laparoscopic cholecystectomy, but only rarely cause clinical complications. We flag this case as an interesting differential diagnosis for unexplained abdomino-percutaneous fistulation in patients who have previously undergone cholecystectomy.",
  "authors": [
    {
      "affiliations": [
        "Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK",
        "Dermatology, Royal Victoria Infirmary, Newcastle upon Tyne, UK"
      ],
      "name": "Luke Nessan Carson"
    },
    {
      "affiliations": [
        "Dermatology, Royal Victoria Infirmary, Newcastle upon Tyne, UK"
      ],
      "name": "Melanie Page"
    },
    {
      "affiliations": [
        "Radiology, Royal Victoria Infirmary, Newcastle upon Tyne, UK"
      ],
      "name": "Robert Holmes"
    },
    {
      "affiliations": [
        "Dermatology, Royal Victoria Infirmary, Newcastle upon Tyne, UK"
      ],
      "name": "David Brass"
    }
  ],
  "title": "Uncommon cause of percutaneous fistulation",
  "uid": "2d161c28-b10b-576f-ae98-abafa2f0b50c"
}