Pelvic kidney

Pelvic kidney (sometimes known as sacral kidney) is a kidney that is seen fixed in the bony pelvis or across the spine 1.

Pelvic ectopia is seen in 1 in 2100-3000 autopsies. It is considered the most common form of renal ectopia 4.

These patients are asymptomatic. Renal tract pathology (e.g. infection, calculus) can affect pelvic kidneys and thus the referred pain is not typical for the renal tract and it may be confused for appendicitis or pelvic inflammatory disease.

Other signs and symptoms of ectopic kidneys include:

  • incontinence
  • palpable abdominal or pelvic mass
  • urinary tract infection
  • renovascular hypertension secondary to an anomalous blood supply (from the iliac arteries)
  • dystocia from a pelvic kidney

Ectopic kidneys are often associated with other abnormalities such as agenesis of the opposite kidney, vascular malformations and genital anomalies.

Other uncommon associations include:

Abdominal and pelvic anatomy
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Article information

rID: 25481
System: Urogenital
Section: Anatomy
Tags: refs, variant
Synonyms or Alternate Spellings:
  • Pelvic ectopic kidney
  • Pelvic kidneys
  • Pelvic ectopic kidneys
  • Sacral kidneys
  • Sacral kidney

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