{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T16:36:53Z","timestamp":1760027813876},"reference-count":46,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"17","license":[{"start":{"date-parts":[[2021,10,25]],"date-time":"2021-10-25T00:00:00Z","timestamp":1635120000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,10,25]]},"abstract":"<jats:sec>\n<jats:title>BACKGROUND<\/jats:title>\n<jats:p>This report depicts a rare case of acutely developed urinary retention as well as sensory and motor disturbances caused by formation of a large hematoma within the piriformis muscle, which caused compression of nerves within the suprapiriform and infrapiriform foramina, thus imitating cauda equina syndrome. Although cases of acute lumbosacral plexopathy have been described, this case is the first time both urinary retention and sensory and motor disturbances were present.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>OBSERVATIONS<\/jats:title>\n<jats:p>The most useful tools for diagnosis of acute piriformis syndrome are detailed patient history, magnetic resonance imaging (MRI) of the pelvic region, and electrophysiological testing performed by an experienced electrophysiologist. As a result of diligent rehabilitation, including physiotherapy and electrostimulation, the patient was able to successfully recover, regardless of acute compression of the sacral plexus that lasted 6 days.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>LESSONS<\/jats:title>\n<jats:p>Clinicians should actively ask about previous pelvic trauma when taking a patient history in similar cases, especially if the patient is receiving anticoagulation treatment. If MRI of the lumbar spine does not reveal any pathologies, MRI of the pelvic region should be performed. Acute surgical decompression is crucial for preserving neurological function. In similar cases, it is possible to differentiate between spinal cord, cauda equina, and pelvic lesions using electrophysiological studies.<\/jats:p>\n<\/jats:sec>","DOI":"10.3171\/case21252","type":"journal-article","created":{"date-parts":[[2021,11,1]],"date-time":"2021-11-01T07:04:37Z","timestamp":1635750277000},"source":"Crossref","is-referenced-by-count":4,"title":["Acute piriformis syndrome mimicking cauda equina syndrome: illustrative case"],"prefix":"10.3171","volume":"2","author":[{"given":"Jan","family":"Lodin","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"Neurology, J.E. Purkyne University, Masaryk Hospital Krajsk\u00e1 Zdravotn\u00ed a.s., \u00dast\u00ed nad Labem, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u0160t\u011bp\u00e1nka","family":"Bru\u0161\u00e1kov\u00e1","sequence":"additional","affiliation":[{"name":"Faculty of Medicine in Plze\u0148, Charles University, Plze\u0148, Czech Republic; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Kachl\u00edk","sequence":"additional","affiliation":[{"name":"Department of Anatomy, Second Faculty of Medicine in Prague, Charles University, Prague, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Same\u0161","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivan","family":"Humhej","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"Department of Anatomy, Second Faculty of Medicine in Prague, Charles University, Prague, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"ref311","doi-asserted-by":"crossref","first-page":"597","DOI":"10.1016\/j.nec.2008.07.001","article-title":"Controversial entrapment neuropathies","volume":"19","author":"Campbell","year":"2008","journal-title":"Neurosurg Clin N Am"},{"key":"ref201","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1007\/s00590-017-2026-5","article-title":"Morphological anatomy of thoracolumbar nerve roots and dorsal root ganglia","volume":"28","author":"Leng","year":"2018","journal-title":"Eur J Orthop Surg Traumatol"},{"key":"ref441","doi-asserted-by":"crossref","first-page":"1820","DOI":"10.1002\/jor.23186","article-title":"Surgical anatomy of the sciatic nerve: a meta-analysis","volume":"34","author":"Tomaszewski","year":"2016","journal-title":"J Orthop Res"},{"key":"ref231","volume-title":"Gray\u2019s Anatomy: The Anatomical Basis of Clinical Practice","author":"Stranding","year":"2020"},{"key":"ref271","doi-asserted-by":"crossref","first-page":"987","DOI":"10.1016\/j.crad.2006.04.018","article-title":"Causes of lumbosacral plexopathy","volume":"61","author":"Planner","year":"2006","journal-title":"Clin Radiol"},{"key":"ref371","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1515\/folmed-2017-0038","article-title":"Cauda equina syndrome due to lumbar disc herniation: a review of literature","volume":"59","author":"Kapetanakis","year":"2017","journal-title":"Folia Med (Plovdiv)"},{"key":"ref291","first-page":"26","article-title":"Ruptured iliac aneurysm presenting as lumbosacral plexopathy","volume":"14","author":"Ozkavukcu","year":"2008","journal-title":"Diagn Interv Radiol"},{"key":"ref341","doi-asserted-by":"crossref","first-page":"1811","DOI":"10.1007\/s10067-019-04552-y","article-title":"Piriformis pyomyositis, a cause of piriformis syndrome. 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