Human pathology

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fetal hydronephrosis

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Hydronephrosis Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres Bilateral hydronephrosis and bilateral megaureteres with posterior (...) Bilateral hydronephrosis and bilateral megaureteres with posterior (...) Bilateral hydronephrosis and bilateral megaureteres with posterior (...) 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)
congenital hydronephrosis

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

Keywords