Nephroptosis

For other uses, see Ptosis (disambiguation).

Nephroptosis
Classification and external resources
ICD-10	N28.8
ICD-9	593.0

Nephroptosis (also called floating kidney or renal ptosis) is an abnormal condition in which the kidney drops down into the pelvis when the patient stands up. It is more common in women than in men. It has been one of the most controversial conditions among doctors in both its diagnosis and its treatments.^[1]

Cause

It is believed to result from deficiency of supporting perirenal fasciae.

Symptoms

Nephroptosis is asymptomatic in most patients. However, nephroptosis can be characterized by violent attacks of colicky flank pain, nausea, chills, hypertension, hematuria and proteinuria. Patients with symptomatic nephroptosis often complain of sharp pains that radiate into the groin. Many patients also suggest a weighing feeling on the abdomen. Pain is typically relieved by lying down.

Diagnosis

Diagnosis is contemplated based upon patient symptoms. Diagnosis is confirmed during intravenous urography, by obtaining erect and supine films.

Treatment

Nephropexy was performed in the past to stabilize the kidney, but presently surgery is not recommended in asymptomatic patients. Laparoscopic nephropexy has recently become available for selected symptomatic patients.

References

1. ^ Moss SW (1997). "Floating kidneys: a century of nephroptosis and nephropexy". J. Urol. 158 (3 Pt 1): 699–702. doi:10.1016/S0022-5347(01)64296-4. PMID 9258063. http://linkinghub.elsevier.com/retrieve/pii/S0022-5347(01)64296-4. 

External links

• Barber N, Thompson P (2004). "Nephroptosis and nephropexy--hung up on the past?". Eur Urol 46 (4): 428–33. doi:10.1016/j.eururo.2004.03.023. PMID 15363554. 

• Medcyclopaedia - Nephroptosis