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nephroptosis; floating kidney; renal ptosis
Etiology:
risk factors
- fibromuscular dysplasia of the renal artery
Pathology:
- kidney descends more than 2 vertebral bodies (or >5 cm) during a position change from supine to upright
Epidemiology:
- more common in women than in men
Clinical manifestations:
- most patients are asymptomatic
- colicky flank pain, may radiate to groin
- nausea
- chills
- hypertension
- hematuria
- proteinuria
Radiology:
- renal ultrasound in supine & upright positions
- intravenous urography in supine & upright positions
Management:
- nephropexy for symptomatic patients
General
kidney disease; renal disease
References
- Wikipedia: Nephroptosis
http://en.wikipedia.org/wiki/Nephroptosis
- Jain N, Schwartz BF
eMedicine: Nephroptosis
http://emedicine.medscape.com/article/1458935-overview