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    Intradural disc herniation with vacuum phenomenon: CT diagnosis. Anda S,Dale L G,Vassal J Neuroradiology
    Intradural lumbar disc herniation. Report of three cases with a review of the literature. Kataoka O,Nishibayashi Y,Sho T Spine Intradural lumbar disc herniation (ILDH) is rare. Three new cases of this condition are reported, adding to the 70 previously documented cases. An incidence of ILDH in between 0.04 and 0.33 percent of lumbar disc protrusions has been reported. More than one third of ILDH were observed at L1-2 to L3-4 levels, while only a tenth of cases occurred at L5-S1. The mechanism of ILDH is not known with certainty. Adhesions between the ventral wall of the dura and posterior longitudinal ligament could act as a preconditioning factor. A diagnosis of ILDH may be made with difficulty, and it is seldom suspected preoperatively. Prompt surgery is necessary because the neurologic prognosis appears to be closely linked with preoperative duration of neurologic symptoms.
    Intradural disc herniation associated with epidural gas. Hidalgo-Ovejero A M,Garcia-Mata S,Izco-Cabezon T,Garralda-Galarza G,Martinez-Grande M Spine STUDY DESIGN:A case report of a patient suffering from an intradural herniated disc associated with the presence of epidural gas. OBJECTIVE:To advise spine surgeons of the possible association of intradural disc herniation and epidural gas, to prevent overlooking intradural disc fragments during surgery. SUMMARY OF BACKGROUND DATA:Three cases of this rare association were published previously, something surprising given the relatively rare occurrence of intradural herniations and the presence of epidural gas. METHODS:A case is presented where such an association occurred, on the basis of preoperative examinations and intraoperative findings. The literature is reviewed for cases of herniated discs associated with epidural gas and for intradural herniations. RESULTS:During the open discectomy, after a negative epidural examination, an intradural examination was performed, revealing a disc herniation, which was removed. The patient's postoperative development was satisfactory. CONCLUSION:The possibility of an intradural herniated disc must always be considered when performing an open discectomy on a patient whose computed tomography scan reveals the presence of epidural gas. In the event that no clear disc herniation is found to justify the clinical symptoms or the previous radiologic findings, an intradural exploration may be indicated.
    Cervical intradural disc herniation. Iwamura Y,Onari K,Kondo S,Inasaka R,Horii H Spine STUDY DESIGN:A case report of anterior en bloc resected cervical intradural disc herniation and a review of the literature. OBJECTIVE:To discuss the pathogenesis of cervical intradural disc herniation. SUMMARY OF BACKGROUND DATA:Including this study case, only 17 cases of cervical intradural disc herniation have been reported. There have been few detailed reports concerning the pathogenesis of cervical intradural disc herniation. METHODS:A cervical intradural disc herniation at C6-C7, with localized hypertrophy and segmentally ossified posterior longitudinal ligament, is reported in a 45-year-old man who had Brown-Sequard syndrome diagnosed on neurologic examination. Neuroradiologic, operative, and histologic findings, particularly the pathology of the anterior en bloc resected posterior vertebral portion of C6 and C7, were evaluated for discussion of the pathogenesis. RESULTS:Adhesion of dura mater and hypertrophic posterior longitudinal ligament was observed around a perforated portion of the herniated disc, and histologic study showed irregularity in fiber alignment accompanied by scattered inflammatory cell infiltration and hypertrophy in the posterior longitudinal ligament. The cervical intradural disc herniation was removed successfully and followed by C5-Th1 anterior interbody fusion with fibular strut graft. Neurologic recovery was complete except for minor residual sensory disturbance in the leg 7 years after the surgery. CONCLUSIONS:Cervical intradural disc herniation is an extremely rare condition. The pathogenesis remains obscure. Only 16 cases have been reported in the literature, and there has been little discussion concerning the local pathology of the herniated portion. The pathogenesis of the disease in the patient reported here was considered to be the adhesion and fragility of dura mater and posterior longitudinal ligament. This was caused by hypertrophy, with chronic inflammation and ossification of the posterior longitudinal ligament sustaining chronic mechanical irritation to the dura mater, leading to perforation of the herniated disc by an accidental force.
    Intradural lumbar disc herniation--is it predictable preoperatively? A report of two cases. Choi Jae Young,Lee Wan Soo,Sung Kyeong Hoon The spine journal : official journal of the North American Spine Society BACKGROUND CONTEXT:Intradural disc herniations are thought to be rare events, and there have been relatively few literature reports of intradural disc herniations available with regard to magnetic resonance imaging findings. PURPOSE:The authors describe two patients with intradural lumbar disc herniations, one with and one without preoperative diagnosis, who had different postoperative outcomes. STUDY DESIGN:Case study METHODS:The first patient underwent an extended L3 subtotal laminectomy followed by bilateral medial facetectomy and foraminotomy at L3-L4. A durotomy uncovered large disc fragments comprised of friable disc materials and end plates, after no clear disc herniation was found in the epidural space. The second patient underwent anterior lumbar interbody fusion after a preoperative diagnosis of intradural disc herniation. RESULTS:The first patient experienced a marked reduction of pain and progressive recovery of sensory disturbance, but neurologic examination showed right foot drop postoperatively. Two years after surgery, she can not walk without a cane because the neurologic deficit of the right ankle has shown no improvement. Two days after surgery, the second patient was allowed to ambulate with a lumbar orthosis. Neurologic examination showed no motor deficit. Twenty-one months after surgery, the patient reports minimal back pain when sitting on a chair for prolonged periods of time. CONCLUSION:Our cases highlight the importance of preoperative diagnosis in the treatment of intradural lumbar disc herniations. The potential presence of an intradural disc herniation must always be considered preoperatively on a patient whose magnetic resonance imaging study demonstrates the "hawk-beak sign" on axial imaging as well as abrupt loss of continuity of the posterior longitudinal ligament (PLL). This association results in an adequate surgical approach, thereby reducing the chance of postoperative neurologic deficit. Finally, anterior lumbar interbody fusion can be a reasonable alternative in the treatment of intradural lumbar disc herniations. 10.1016/j.spinee.2006.02.025
    Intradural herniation of intervertebral disc at the level of Lumbar 1-Lumbar 2. Oztürk Adil,Avci Emel,Yazgan Pelin,Torun Fuat,Yücetaş Seyho,Karabağ Hamza Turkish neurosurgery Intradural disc herniation is a serious and rare complication of intervertebral disc rupture. The preoperative diagnosis of intradural disc herniation is still difficult despite new neuroradiologic investigation possibilities including computerized tomography and magnetic resonance imaging and it is usually diagnosed by during surgery. Here we present an intradural disc herniation case at the level of L1-L2 with accompanying significant myelopathic neurologic deficits. A 50-year-old female patient was admitted to the hospital with pain and weakness in both legs. Her neurological examination revealed paraparesis. Magnetic resonance imaging showed an extruded disc hernia of central localization at the L1-L2 level. She underwent total laminectomy at the level of L1-L2 and her intradural disc fragment was extirpated by microsurgical methods.
    Intradural cervical disc herniation in a Klippel-Feil patient. Neroni Massimiliano,Gazzeri Roberto,Galarza Marcelo,Alfieri Alex Spine STUDY DESIGN:Case report and clinical discussion. OBJECTIVE:To describe a rare case of intradural cervical disc herniation in a patient with Klippel-Feil syndrome (KFS). SUMMARY OF BACKGROUND DATA:KFS is a congenital spinal malformation characterized by the failure in segmentation of 2 or more cervical vertebrae. The development of a cervical disc herniation in a nonfused segment is uncommon. Intradural disc herniation is rare, with only 21 cases reported in the cervical region. METHODS:We present a case of a 52-year-old woman with KFS (C5-C6 fusion) who developed acute radiculopathy secondary to an intradural cervical disc herniation. Neurologic examination revealed a mild (Grade 3/5) decrease in motor function of the fingers and difficulty in performing fine motor tasks with right hand. RESULTS:The patient underwent microsurgical removal of the herniated disc via an anterior approach followed by interbody fixation and anterior plating; exploration of the surgical field revealed 2 intradural disc fragments. After surgery, she experienced a complete remission of the symptoms. CONCLUSION:To our knowledge, this is the first case of intradural cervical disc herniation in a KFS patient described in the literature. 10.1097/BRS.0b013e3181558361
    Intradural intraradicular disc herniation in the lumbar spine: apropos of a new case. Turgut Mehmet The spine journal : official journal of the North American Spine Society 10.1016/j.spinee.2010.10.020
    Intradural cervical disc herniation: report of two cases and review of the literature. Pan Jie,Li Lijun,Qian Lie,Teng Honglin,Shen Bin,Tan Jun,Zhou Wei,Yang Mingjie Spine STUDY DESIGN:Case report and review of the literature. OBJECTIVE:To report two additional cases with intradural cervical herniation and review the pertinent literature. SUMMARY OF BACKGROUND DATA:Intradural cervical disc herniation is rare and a total of 22 cases were reported in 2007. In searching the world literature on this topic, we found 27 cases of intradural cervical disc herniation in all. METHODS:Clinical history, physical examination, and radiographic findings of two patients with intradural cervical disc herniation were described, and corpectomy was performed in both cases. A review of the literature was completed. RESULT:The outcome of one case was gratifying, and at a 36-month follow-up, nearly a full recovery was obtained. But the other's condition was disappointing, whose postoperative MRI demonstrated high signal intensity in the spinal cord and adhesion of spinal cord to the posterior margin at C4 level. CONCLUSION:Intradural cervical disc herniation is relatively rare, and the two additional cases updated the number of this condition to 29. It remains difficult to definitively diagnose the disease before surgery, but some indirect signs may indicate the cases. Corpectomy under a microscope as the first option in treatment of this disease is recommended once it is highly diagnosed. The pathogenesis of intradural cervical disc herniation remains to be further investigated. We presume that biochemical factors may play an important role in the pathogenesis. 10.1097/BRS.0b013e3181fee8d2
    Intradural disc herniation at L5 level mimicking an intradural spinal tumor. Liu Chang-Chih,Huang Chih-Ta,Lin Chih-Ming,Liu Kan-Nan European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society Intradural lumbar disc herniation is a rare complication of disc disease. The reason for the tearing of the dura matter by a herniated disc is not clearly known. Intradural disc herniations usually occur at the disc levels and are often seen at L4-L5 level but have also been reported at other intervertebral disc levels. However, intradural disc herniation at mid-vertebral levels is rare in the literature and mimics an intradural extramedullary spinal tumor lesion in radiological evaluation. Although magnetic resonance imaging (MRI) with gadolinium is useful in the diagnosis of this condition, preoperative correct diagnosis is usually difficult and the definitive diagnosis must be made during surgery. We describe here a 50-year-old female patient who presented with pain in the lower back for 6 months and a sudden exacerbation of the pain that spread to the left leg as well as numbness in both legs for 2 weeks. MRI demonstrated an intradural mass at the level of L5. Laminectomy was performed, and subsequently durotomy was also performed. An intradural disc fragment was found and completely removed. The patient recovered fully in 3 months. Intradural lumbar disc herniation must be considered in the differential diagnosis of mass lesions in the spinal canal. 10.1007/s00586-011-1772-z
    A patient with thoracic intradural disc herniation. Whitmore Robert G,Williams Brian J,Lega Bradley C,Sanborn Matthew R,Marcotte Paul Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia Intradural disc herniation is a rare disease that occurs most commonly in the lumbar region, while fewer than 5% occur in the thoracic and cervical regions. We report a patient with thoracic intradural disc herniation at T12-L1 who presented with radiculopathy and motor weakness. The preoperative MRI did not demonstrate an intradural lesion, and it was identified intraoperatively by inspection and palpation of the thecal sac. The disc was removed, and the patient experienced good neurological recovery and remains pain free 1 year after surgery. 10.1016/j.jocn.2011.04.021
    Intradural lumbar disc herniation: report of five cases with literature review. Ducati Luis Gustavo,Silva Mateus Violin,Brandão Michele Madeira,Romero Flavio Ramalho,Zanini Marco Antonio European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society INTRODUCTION:Intradural lumbar disc herniations are uncommon presentations of a relatively frequent pathology, representing less than 1% of all lumbar disc hernias. They show specific features concerning their clinical diagnosis, with a higher incidence of cauda equina syndrome, and their surgical treatment requires a transdural approach. METHODS:In this article, we describe five cases of this pathology and review the literature as well as some considerations about the difficulties in the preoperative diagnostic issues and the surgical technique. CONCLUSION:We concluded that for intradural disc herniations the diagnosis is mainly intraoperative, and the surgical technique has some special aspects. 10.1007/s00586-012-2516-4
    Intradural lumbar disc herniation associated with degenerative spine disease and rheumatoid arthritis. Krajewski Kara Leigh,Regelsberger Jan Spine STUDY DESIGN:A case report. OBJECTIVE:To demonstrate a case of intradural lumbar disc herniation including imaging studies, intraoperative imaging, and an intraoperative video. SUMMARY OF BACKGROUND DATA:The first case of lumbar intradural disc herniation was reported as early as 1942; since then more than 150 cases have been reported, mostly in the lumbar spine. Gadolinium-enhanced magnetic resonance image (MRI) is considered the "gold standard" for diagnosing this entity, although it is rarely performed routinely in lumbar disc disease and diagnosis is often made intraoperatively. METHODS:A 70-year-old man presented to the emergency department as a referral complaining of lower back pain, loss of sensation in the right thigh, and difficulty walking. On examination, he showed uneven gait, right-sided foot drop (1/5), hypesthesias in the right inguinal area and ventral thigh, and a positive straight leg raise test on the right. Anal sphincter tone was within normal limits. A magnetic resonance image of the lumbar spine showed a large mediolateral herniated disc at L3-L4, with caudal displacement and unclear signal changes intradurally. RESULTS:Intraoperatively, the herniated disc was found upon opening the dural sac. CONCLUSION:Intradural disc herniations are a rare entity. The opening and inspection of the dural sack should be considered when the correct spinal level can be confirmed and insufficient herniated disc material can be visualized extradurally. 10.1097/BRS.0b013e31828daa8c
    A pure fluid-filled intradural cyst associated with intradural disc herniation and possible pathogenesis: a case report. Nam Kyoung Hyup,Han In Ho,Cho Won Ho,Choi Byung Kwan The spine journal : official journal of the North American Spine Society BACKGROUND CONTEXT:Lumbar intradural disc herniation (IDH) is rare, and intradural cyst associated with IDH is quite rare. Only seven cases of an intradural cyst associated with lumbar disc herniation have been reported, and all were gas-filled cysts. We report the first case, to our knowledge, of a fluid-filled intradural cyst associated with IDH. PURPOSE:To report an extremely rare case of a fluid-filled intradural cyst associated with lumbar IDH and suggests the possible pathogenesis. STUDY DESIGN:Case report. METHODS:An 82-year-old woman presented with right leg pain and motor weakness. Computed tomography and magnetic resonance imaging (MRI) scans showed calcified lumbar disc herniation and an intradural cystic mass at the L1-L2 level. An MRI, which was performed 2 years before admission, showed an IDH without a cyst at the same level. RESULTS:Surgical resection of the intradural cyst was performed. Intraoperative finding showed a fluid-filled intradural cyst with 1-cm diameter of displacing nerve rootlets. The cyst was connected with extradural cystic components through a ventral dural hole, but the tract was blocked by fibrous septum. Histopathologic examination showed a pseudocyst that consisted of degenerative cartilaginous and fibrous tissues, including degenerative disc materials. We concluded that the cyst was an intradural cyst transformed from the intradural disc fragment. CONCLUSIONS:The current case is the first report to our knowlege of a fluid-filled intradural cyst associated with IDH. The possible mechanism may be focal degeneration and spontaneous absorption of the intradural disc with fluid production. Unlike the gas-filled intradural cysts, the cause of the pure fluid-filled cyst may be disconnection from the intervertebral vacuum because of a calcified disc and septation of the cyst. 10.1016/j.spinee.2013.06.009
    Severe Intradural Lumbar Disc Herniation with Cranially Oriented Free Fragment Migration. Tempel Zachary,Zhu Xiao,McDowell Michael M,Agarwal Nitin,Monaco Edward A World neurosurgery BACKGROUND:Intrathecal disc herniation is a rare but serious condition that has the potential to generate devastating neurologic deficits. We present a case of a 56-year-old man who developed cauda equina syndrome after several episodes of severe Valsalva maneuver. CASE DESCRIPTION:The patient was found to have developed subacute urinary retention and leg weakness. Magnetic resonance imaging findings were concerning for an unusual-appearing lesion extending cranially at L2-3. Urgent decompression via an L2 laminectomy, exploration, and subsequent discectomy was performed. The patient recovered exceptionally well, regaining bladder function and ultimately being able to ambulate without assistance. CONCLUSIONS:Cranially extending intrathecal disc herniations are a rare phenomenon and exceptionally uncommon above L3. The clinician should have a high level of suspicion for herniation when looking at the clinical and historical information consistent with such a diagnosis even in the presence of ambiguous imaging findings. 10.1016/j.wneu.2016.06.024
    Spontaneous cervical intradural disc herniation presenting with Brown-Séquard and Horner's syndrome: lesson learned from a very unique case. Baudracco Irene,Grahovac Gordan,Russo Vittorio M European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society PURPOSE:Cervical spontaneous intradural disc herniation (IDH) is an extremely rare condition. We describe a unique case of a patient presenting with a Brown-Séquard syndrome (BSS) and Horner's syndrome (HS). This study aimed to report an unusual case of spontaneous cervical intradural disc herniation that presented with Horner's and Brown-Séquard syndrome (BSS) and discuss difficulties in preoperative diagnosis and treatment difficulties of intradural cervical disc. METHODS:Notes and images review, and analysis of the relevant literature. RESULTS:A 45-year old female presented with acute Horner's syndrome and Brown-Séquard syndrome. The magnetic resonance imaging of cervical spine revealed C4-5 disc extrusion with cord compression. The patient underwent urgent decompression through an anterior cervical corpectomy and fusion. Patient fully recovered 6 months after disease onset. CONCLUSION:We would like to emphasize that prompt and anterior cervical decompression is the treatment of choice, as it directly address the problem and allows dura repair in spontaneous cervical disc herniation. 10.1007/s00586-017-5044-4
    A rare case of concomitant cervical disc herniation and intradural meningioma treated with one-stage posterior surgery. Hu Xiaojian,Chen Zhong,Wang Yue European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society STUDY DESIGN:Case report. PURPOSE:To present a rare case of cervical disc herniation concomitant with intradural meningioma which was successfully treated using a single one-stage posterior surgery of tumor resection and transdural discectomy. Coexistence of symptomatic disc herniation and intra-spinal tumor in the same cervical segment is extremely rare. Usually, two-stage anterior and posterior surgeries are needed to treat two conditions, respectively. One-stage posterior surgery to treat two pathologies simultaneously has not been reported in the literature. METHODS AND RESULTS:A 76-year-old man presented with leg weakness and numbness for 6 months and left arm pain for 2 months. Contrast MR imaging revealed C3/4 intervertebral disc herniation and a hyperintense intradural lesion at the right portion of C3 canal. A one-stage posterior surgery, including C3/4 laminectomy, intradural tumor resection, transdural C3/4 discectomy, and C3/4 lateral mass instrumentation and fusion, was performed to treat two distinct pathologies together. The patient's arm pain and numbness disappeared right after the surgery and symptoms of myelopathy fully recovered at 6-month follow-up. Histological studies confirmed a herniated disc and a meningioma. CONCLUSION:In rare case, intradural tumor coexists with cervical disc herniation. When suspicious findings were noticed, or clinical symptoms cannot be fully explained, contrast MR imaging is helpful in differential diagnosis. Microscopic transdural discectomy is safe, and could be used as an optional procedure for cervical disc herniation in some cases. 10.1007/s00586-017-5414-y
    Intradural Ganglioneuroma Mimicking Lumbar Disc Herniation: Case Report. Barrena López Cristina,De la Calle García Beatriz,Sarabia Herrero Rosario World neurosurgery BACKGROUND:Ganglioneuroma (GN) is a slow-growing tumor originating from the neural crest-derived cells, which form the sympathetic nervous system. These tumors can affect anywhere along the peripheral autonomic ganglion sites and are most commonly found in the mediastinum and retroperitoneum. Spinal GNs are extremely rare and, so far, only 1 case arising from a lumbar nerve root has been reported in the English literature. GNs are often asymptomatic, and the majority of them are found incidentally in healthy subjects. Because of their slow growth, symptoms may result from the compressive effect of the tumor. CASE DESCRIPTION:A 40-year-old man presented with a right sciatica episode accompanied by global muscle weakness and tingling pain. Findings of the neurologic examination displayed positive Lasegue test and sensory deficit over L5-S1 dermatomes. Magnetic resonance imaging of the lumbar spine without contrast showed a well-circumscribed longitudinal lesion arising from L5-S1 disc space, moving us toward a diagnosis of lumbar disc herniation. During surgery, we observed a mass well-encapsulated and oval-shaped inside S1 right root. The patient underwent subtotal resection. Histopathologic examination showed clusters of ganglion mature cells with neuromatous stroma, consistent with a ganglioneuroma. CONCLUSIONS:We report a case that illustrates the clinical, radiologic, and histopathologic features of a ganglioneuroma mimicking a lumbosciatica syndrome and review related literature and similar cases. 10.1016/j.wneu.2018.05.225
    L1/2 Intradural Disc Herniation with Compression of the Proximal Cauda Equina Nerves: A Surgical Challenge. Low Jacob Chen Ming,Rowland David,Kareem Haider World neurosurgery BACKGROUND:Intradural disc herniation (IDH) in the upper lumbar spine is rare. Preoperative radiologic diagnosis can be difficult, making operative planning challenging. We report on a 74-year-old female patient who was diagnosed with an L1-L2 IDH intraoperatively. This case report aims to highlight and discuss the radiological features of IDH and operative challenges when approaching IDH. CASE DESCRIPTION:A 74-year-old female patient presented to outpatient clinic with a 3-month history of significant intermittent neurological claudication and severe lumbar back pain. Her examination was unremarkable apart from a positive left-sided femoral stretch test. Magnetic resonance imaging (MRI) revealed a large central L1/L2 disc herniation causing significant compression of the thecal sac and proximal cauda equina nerve roots. She underwent an elective posterior L1/L2 lumbar exploration. Intraoperatively, identification of the disc was difficult, which led to inadvertent cerebrospinal fluid leak after incision of what was thought to be a disc bulge. Further exploration revealed an intradural disc that was removed via durotomy. The thecal sac was repaired with sutures and TISSEEL (Baxter, Deerfield, Illinois, USA). Postoperatively, the patient complained of weak left lower limb; MRI revealed residual disc remnants causing compression of the cauda equina. She successfully underwent an urgent revision decompression procedure. She was discharged to rehabilitation on postoperative day 14 with weakness in left knee flexion and extension (MRC grade 4/5) and left ankle plantar- and dorsiflexion (MRC grade 2/5). CONCLUSIONS:Upper lumbar IDH represent a surgical challenge. Intraoperative considerations include identification of the disc, intentional or incidental durotomy, intradural discectomy, and anatomical restrictions of operating at the level proximal to the cauda equina. 10.1016/j.wneu.2020.06.163
    Intradural disc herniation - report of two cases. Baranowski Paweł,Baranowska Alicja,Baranowska Joanna,Konieczny Rafał Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego Intradural disc herniation is a very rare condition, which occurs in up to 0.3% cases of all disc herniations. It mostly develops at L4-L5 level, which is caused by the presence of strong adhesions between the posterior longitudinal ligament and dura mater. These rare cases are included in the classifications, however, they are associated with diagnostic difficulties, both in physical examination and in the image visible in magnetic resonance. REPORT OF 2 CASES:The presented patients were treated in the Neuroortopedic Department within the last two years. Despite previous examinations, the final diagnosis of intradural disc herniation occurred only during the surgery. CONCLUSIONS:Rarely occurring hernias of the intervertebral disc require increased vigilance among surgeon's spine physicians. Preoperative diagnosis of intradural lesion would make it possible to develop a better surgical strategy.
    Cervical intradural disc herniation with Brown-Séquard syndrome: case report and literature review. Rong Yuluo,Wang Jiaxing,Sui Tao,Liu Wei,Luo Yongjun,Cai Weihua Journal of pain research Objective:To report a rare case of cervical intradural disc herniation (IDH) with Brown-Séquard syndrome and to review the related literature. Methods:Pathogenesis, preoperative diagnosis, and the surgical technique are discussed, and previous literature reports are reviewed. Results:A 44-year-old woman complained of weakness of the left upper and lower extremities and paresthesias in the right limbs after a bicycle ride 3 days earlier. She had a history of neck pain for 2 years prior. CT showed obvious ossification of the posterior longitudinal ligament (OPLL), and MRI revealed C3-7 disc herniations, with a positive "halo sign" around the herniated C4/5. We performed emergency decompression through anterior cervical corpectomy, and vertebrotomy decompression and fusion. At review 3 months after surgery, the patient's neck pain was markedly relieved, and motor strength in the limbs had improved. At 1 year after surgery, she had recovered completely. Conclusion:Cervical IDH is a rare condition that may be related to the traumatic inflammatory response and OPLL. Relatively rare imaging features such as the hawk-beak sign, halo sign, Y sign, and epidural gas sign could help in preoperative diagnosis. Prompt anterior cervical decompression is the preferred treatment for this condition. 10.2147/JPR.S200632