title: Late complication of a renal calculus: fistulisation to the psoas muscle, skin and bronchi.
abstract: Kidney disease presenting with cutaneous fistula is a rare condition. We present a case of a 90-year-old woman with dementia who had no prior urological problems and had a cutaneous fistula in the left lumbar region. A fistulogram and computer tomography examination revealed a large staghorn calculus with signs of xanthogranulomatous pyelonephritis in the left kidney and renal fistulisation to the psoas muscle, skin and bronchi. To our knowledge this is the first report in the literature of coexisting renal fistulisation to the psoas major muscle, skin and bronchi. This report illustrates how computed tomography in combination with fistulography can resolve the diagnostic dilemma that pertains to the complex spread of the disease in cases involving nephrocutaneous fistula. Furthermore, the report shows how a renal calculus, even asymptomatic, can cause a serious medical condition, and highlights the importance of early medical intervention.
authors.affiliation: Radiology Institute, University Medical Centre, Zaloška 2, Ljubljana, Slovenia.
authors.forename: Ziga
authors.initials: Z
authors.lastname: Snoj
authors.affiliation: Radiology Institute, University Medical Centre, Zaloška 2, Ljubljana, Slovenia.
authors.forename: Nenad
authors.initials: N
authors.lastname: Savic
authors.affiliation: Radiology Institute, University Medical Centre, Zaloška 2, Ljubljana, Slovenia.
authors.forename: Jaka
authors.initials: J
authors.lastname: Regvat
mesh_terms: D000369:Aged, 80 and over; D001982:Bronchial Diseases / Q000209:etiology*; D017577:Cutaneous Fistula / Q000209:etiology*; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000150:complications*; D000067562:Late Onset Disorders / Q000209:etiology*; D009135:Muscular Diseases / Q000209:etiology*; D016658:Psoas Muscles; D011705:Pyelonephritis, Xanthogranulomatous; D014057:Tomography, X-Ray Computed; D014548:Urinary Fistula / Q000209:etiology*