Home > E. Pathology by systems > Urinary system > Kidneys > fetal hydronephrosis

fetal hydronephrosis

Thursday 19 February 2004

Definition: Dilatation of the renal pelvis and calices due to a urinary obstruction.

Fetal hydronephrosis is the most common cause of an abdominal mass of genitourinary tract origin in neonates.

Types

- unilateral fetal hydronephrosis
- bilateral fetal hydronephrosis

Synopsis

- pelvicalyceal dilatation
- renal parenchymal atrophy
- renal parenchymal fibrosis
- blunting of medullary pyramids
- foci of residual renal parenchyma

Etiology

- unilateral congenital hydronephrosis

  • pelviureteric junction stenosis (most frequent cause)

- bilateral congenital hydronephrosis (20%)

Associations

- Renal dysplasia

Portfolio

  • Hydronephrosis
  • Bilateral hydronephrosis and bilateral megaureteres
  • Bilateral hydronephrosis and bilateral megaureteres
  • Bilateral hydronephrosis and bilateral megaureteres
  • Bilateral hydronephrosis and bilateral megaureteres with posterior urethral (...)
  • Bilateral hydronephrosis and bilateral megaureteres with posterior urethral (...)
  • Bilateral hydronephrosis and bilateral megaureteres with posterior urethral (...)
  • Bilateral hydronephrosis and bilateral megaureteres with posterior urethral (...)
  • Neonatal hydronephrosis with cystic dilatation of the upper (...)
  • Neonatl hydronephrosis with superior polar cystic dilatation
  • Neonatl hydronephrosis with superior polar cystic dilatation
  • Fetal obstructive kidney (22 weeks)