Ciatalgia secundaria a endometriosis extrapélvica del músculo piriforme. A propósito de un caso

Miguel Domínguez-Páez, de Miguel-Pueyo LS, Luis Segundo de Miguel-Pueyo, Juan Manuel Medina-Imbroda, Medina-Imbroda JM, Laura González-García, González-García L, Moreno-Ramírez V, Vanessa Moreno-Ramírez, Alvaro Martín-Gallego, Álvaro Martín-Gallego, Martín-Gallego A, Mariano Socolovsky, Socolovsky M, Miguel Ángel Arráez-Sánchez, Arráez-Sánchez MÁ
Neurocirugia (Asturias, Spain) · 2012 · vol. 23(4) , pp. 170–174 · doi:10.1016/j.neucir.2012.04.009 · PMID:22728121 · W1976979824
article OA: closed CC0 ⤵ 5 in-corpus citations
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⚙ AI-generated summary by claude@2026-06, 2026-06-07 ⓘ

This case report describes a patient experiencing secondary sciatica due to extrapelvic endometriosis infiltrating the piriformis muscle.

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Abstract

ObjectiveWe present a case report of symptomatic compression of the right sciatic nerve notch, secondary to piriformis muscle endometriosis, as well as a literature review.Material and methodsWe report the case of a 29-year-old woman with 2-year evolution of right chronic sciatica. During the first year, symptoms were episodic and associated with menstruation. During the second year, sciatica was constant and associated with gait disorder due to sciatic musculature weakness. Mononeuropathy was proved by a neurophysiological study, with MRI and PET studies revealing a mass in the sciatic notch and regional pathological increase in metabolic activity. Surgical treatment was performed in order to release the nerve and obtain a histological sample.ResultsThe patient was treated by a transgluteal approach, with external neurolysis of the sciatic nerve and resection of an old-blood cyst at the level of the piriformis muscle. This was subsequently reported as endometriosis by histological examination. The sciatica was resolved after surgery.ConclusionsExtrapelvic sciatic nerve compression by adjacent endometriosis is very infrequent. Muscle denervation and lack of a histological diagnosis led to surgical exploration of the compression area in order to release the nerve, resect the cause of compression and obtain a definitive diagnosis. The procedure improved all symptoms.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Sciatica Female Humans Magnetic Resonance Imaging Nerve Compression Syndromes Sciatic Nerve

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

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