Horseshoe kidney on FDG positron emission tomographic imaging is easily confused with malignancy Academic Article Article uri icon


MeSH Major

  • Fluorodeoxyglucose F18
  • Ovarian Neoplasms
  • Positron-Emission Tomography
  • Tomography, X-Ray Computed


  • Conjoined or "horseshoe" kidneys are congenital anomalies that result from fusion of the independent metanephric blastemas during the second gestational month before their cephalad migration. It occurs once in every 400 births, for a prevalence of approximately 0.25% of the population. Positron emission tomography with fluorodeoxyglucose is an effective imaging technique for detecting and staging various neoplastic diseases. However, assessment of the kidneys can be confounded by accumulation of radioactivity in regions of urinary stasis. Capacious collecting systems and urinary stasis are common in horseshoe kidneys. This can make horseshoe kidneys challenging to recognize because of their atypical location and structure. This report documents a case that would have been confused with malignancy without correlation with anatomic images.

publication date

  • March 31, 2001



  • Academic Article


Digital Object Identifier (DOI)

  • 10.1097/00003072-200104000-00019

PubMed ID

  • 11290902

Additional Document Info

start page

  • 351

end page

  • 2


  • 26


  • 4