Sciatic Nerve Involvement as an Unusual Presentation of Deep Endometriosis

Ana López Carrasco, Alicia Hernández, Paula Alegría Hidalgo Gutiérrez, R. Rodríguez, Roberto Rodríguez González, Patricia Isabel Salas Bolívar, Ramón Usandizaga Elio, Ignacio Zapardiel, Javier de Santiago García
In: Journal of Endometriosis and Pelvic Pain Disorders · 2017 · vol. 9(2) , pp. 120–124 · doi:10.5301/jeppd.5000282 · W2606968173
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Abstract

Introduction Endometriosis affecting the sciatic nerve is extremely uncommon. Its main symptom is catamenial sciatica but it can result in neuropathy. The diagnosis is usually delayed for years. Our objective is to communicate our experience in the diagnosis, management and treatment of this pathology by presenting two patients. Methods Retrospective revision of medical charts of all sciatic endometriosis cases treated in the Endometriosis Unit of the University Hospital, La Paz, Spain. Results Two nulliparous patients 35 and 39 years old, with unilateral sciatica related to sciatic nerve endometriosis are presented. The lag time between the onset of symptoms and diagnosis was 8 and 5 years. Both patients had problems with locomotion and muscle atrophy, so laparoscopic neurolysis was performed with success in pain control but not total recovery of deambulation defect. Conclusions Directed anamnesis and magnetic resonance imaging (MRI) are good tools for diagnosis of endometriosis affecting sciatic nerve. In absence of neuropathy, hormonal pharmacotherapy can be used to control symptoms, but when it is present, surgical nerve decompression must not be delayed, and laparoscopic approach is feasible for trained surgeons. In our cases, neurolysis improved pain but complete recovery of motor function has not been reached. Physicians responsible for primary care need to be aware of the catamenial sciatica due to the nerve damage caused by endometriosis, even when it is very uncommon, because the consequences of the delay in assessment and treatment by a specialized multidisciplinary team in dedicated units may be irreversible.

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