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Cyclic Sciatica: A Manifestation of Compression of the Sciatic Nerve by Endometriosis: A Case Report

Dhôte, Robin MD*; Tudoret, Loïc MD; Bachmeyer, Claude MD*; Legmann, Paul MD; Christoforov, Boyan MD*

Case Report

Study design: A case of cyclic sciatica secondary to ovarian cyst endometriosis is presented.

Objectives: To report the clinical description and magnetic resonance imaging aspects of cyclic sciatica.

Summary of Background Data: Endometriosis of the sciatic nerve is rare, but must be included in the differential diagnosis of sciatic mononeuropathies.

Methods: The authors report a new case of a woman whose cyclic sciatica was caused by an ovarian cystic endometriosis lesion.

Results: Magnetic resonance imaging was described as hyper‐ and hypointense on T1‐weighted sequences, and hyperintense on T2‐weighted sequences at the sciatic notch.

Conclusion: Magnetic resonance imaging may permit a specific diagnosis of this unusual cause of sciatica by showing a hemorrhagic mass in the region of the sciatic nerve. Early recognition is necessary to prevent permanent damage to the sciatic nerve.

From *Service de Médecine Interne and Service de Radiologie A, Hôpital Cochin, Paris, France.

Acknowledgment date: May 1, 1995.

First revision date: November 28, 1995.

Acceptance date: December 20, 1995.

Device status category: 1.

Address reprint requests to: Robin Dhôte, MD; Service de Médecine Interne; Hôpital Cochin; 27 rue du Faubourg Saint‐Jacques; 75979 Paris cedex 14; France

© Lippincott-Raven Publishers.