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Caudal regression syndrome

Case contributed by Sepehr Haghighi
Diagnosis certain


Urinary incontinency

Patient Data

Age: 5 years
Gender: Female

Sacral agenesis with last intact vertebra of S2. The conus terminates opposite L1-L2 level at normal position without truncation. No syrinx is depicted. No vertebral body anomaly is detected.

Bilateral hydroureteronephrosis is visible.

Case Discussion

Caudal regression syndrome represents a spectrum of structural defects of the caudal region. Malformations vary from isolated partial agenesis of the coccyx to lumbosacral agenesis 1.


  • useful to assess canal stenosis
  • a characteristic wedge-shaped cord terminus may be seen 2

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