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Chronic Constriction of the Sciatic Nerve and Pain Hypersensitivity Testing in Rats

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Published on: March 13, 2012

Deep renal ectopia causing sciatic mononeuropathy.

Reza Assadsangabi¹, Mehrdad Hajmomenian, Seyed Ali Nabavizadeh

¹Radiology Department, The Children's Hospital of Philadelphia, 34th St and Civic Center Blvd, Philadelphia, PA, USA, assadsangr@email.chop.edu.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery

|June 7, 2014

Summary

Pelvic ectopic kidney can compress the sciatic nerve, causing lower extremity paresthesia. This rare case highlights the need to consider unusual causes of sciatic nerve compression.

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Area of Science:

Nephrology
Neurology
Anatomy

Background:

Sciatic mononeuropathy is typically caused by nerve compression or injury.
Pelvic ectopic kidney, a rare congenital anomaly, involves the kidney being located in the pelvic cavity.
Compression of the sciatic nerve by pelvic structures is an uncommon etiology.

Observation:

A patient presented with unilateral lower extremity paresthesia.
Symptoms correlated with the sciatic nerve distribution.
Magnetic Resonance Imaging (MRI) revealed lumbosacral plexus compression.

Findings:

The compression was caused by a deeply situated pelvic ectopic kidney.
This represents a previously unreported cause of sciatic mononeuropathy.
The ectopic kidney exerted mechanical pressure on the lumbosacral plexus.

Implications:

This case expands the differential diagnosis for sciatic nerve compression.
Physicians should consider rare anatomical variations, such as renal ectopia, in cases of unexplained sciatic symptoms.
Highlights the importance of advanced imaging in diagnosing complex neurological presentations.