Lateral meningocele mri. Sagittal T1 weighted images of spine in cases of myelocele (A) and myelomeningocele (B). Lateral meningocele syndrome (LMS), also known as Lehman syndrome, is caused by pathogenic variants in exon 33 of NOTCH3. They can be congenital or can be secondary to trauma or surgery. The dural layer that forms the outer wall of lateral meningoceles is often thin; a result of progressive attenuation as the meningocele enlarges. Such meningoceles in adults are mostly presented as a cystic mass and their presentation as a solid mass is very rare. However, magnetic resonance imaging (MRI) revealed a large right-sided lateral thoracic meningocele. Variants in this final exon of NOTCH3 interrupt the regulatory PEST domain, leading to enhanced NOTCH3 signaling due to Dec 16, 2013 · 側方髄膜瘤 (lateral meningocele) ・ 軟髄膜が椎間孔あるいは椎体の欠損部位から異常なヘルニア を起こした状態。 ・ 神経線維腫症 (neurofibromatosis) に合併して起こりやすい。 ・軟髄膜の脱出であるため、内部は脳脊髄液で満たされている。このためMRIでは腫瘤と脊髄腔との連続性がわかりやすい Lateral meningocele syndrome (LMS), also known as Lehman syndrome, is caused by pathogenic variants in exon 33 of NOTCH3. The meningocele was retracted through bipolar cauterization until the level of the bone dehiscence and then resected. Apr 15, 2022 · acquired cranial meningocele idiopathic intracranial hypertension (IIH) spinal meningocele congenital spinal meningocele anterior sacral meningocele acquired spinal meningocele lateral thoracic meningocele A differential diagnosis for both spinal and cranial acquired meningoceles are pseudomeningoceles, which are CSF collections not lined by dura. paraparesis, MRI, in addition to plain radiographs of the spine, should be obtained. After initial presentation, the patient also reported severe headache with blurred vision, for which she had two emergency room Nov 16, 2024 · Terminology Sphenoidal meningoencephalocele can be divided in a number of ways: content: meningoceles vs encephaloceles location: medial vs lateral (see below) extent: instrasphenoidal (confined to the bone) vs transsphenoidal 1 Clinical presentation The clinical presentation will depend on the location of the encephalocele and whether or not it is associated with a cerebral spinal fluid (CSF Nov 5, 2024 · However, magnetic resonance imaging (MRI) revealed a large right-sided lateral thoracic meningocele. Oct 19, 2025 · Radiographic features CT/MRI Imaging of the brain with CT or MRI without and with contrast, and possibly CT or MR venography, is essential in patients with suspected idiopathic intracranial hypertension to exclude elevated CSF pressure due to other causes such as brain tumor, dural sinus thrombosis, hydrocephalus, etc. An anterior defect can form in the vertebral column as a result of faulty embryogenesis. Double cervical and lumbosacral meningocele can be identified during childhood, [26, 27] whereas anterior and lateral cervical meningocele is mainly diagnosed in adulthood, except for a few cases in which Jun 22, 2025 · Myelomeningocele, also known as spina bifida cystica, is a complex congenital spinal anomaly that results in spinal cord malformation (myelodysplasia). The patient was operated by endoscopic transnasal transsphenoidal approach. Another contrast extension from the left middle cranial fossa along its most anterior aspect into the most lateral aspect of the sphenoid CT chest showed unruptured enlarging bilateral lateral thoracic meningoceles causing lung compression. Neurologic sequelæ of the meningoceles depend on size and location and can include neurogenic bladder Findings suggest this being a type of lateral thoracic meningocele. This disorder manifests itself with formations of cysts at different levels of the central nervous system along with meningeal diverticula protruding th Aug 27, 2025 · Dural ectasia Occult intrasacral meningocele Spinal epidural cystic lesions Spinal meninges Cauda equina syndrome CSF-venous fistula Discal cyst Cases: Giant Tarlov cyst Haemorrhagic ovarian cyst Mayer-Rokitansky-Küster-Hauser syndrome Tarlov cyst Thoracic perineural cysts Tarlov cyst Sacral cyst Spinal hydatid cyst Type II split cord Jun 5, 2023 · BACKGROUND Posterior cervical meningoceles are rare in adults because most are surgically excised early in life. Tethering stalk is Apr 15, 2022 · acquired cranial meningocele idiopathic intracranial hypertension (IIH) spinal meningocele congenital spinal meningocele anterior sacral meningocele acquired spinal meningocele lateral thoracic meningocele A differential diagnosis for both spinal and cranial acquired meningoceles are pseudomeningoceles, which are CSF collections not lined by dura. Sep 4, 2023 · Lateral meningocele syndrome (LMS) is a clinical entity with multiple lateral spinal meningoceles (protrusions of arachnoid and dura through spinal foramina), distinctive facial features, hypotonia, joint hyperextensibility, cardiac, skeletal, and urogenital anomalies. CT scan with 3D reconstruction further helps delineate and understand bony anomalies if present. 9 × 1. Moreover, careful reading of axial and MPR images of CT is sure to improve the detectability of anterior and lateral meningocele. Mar 1, 2021 · Knowledge of the distinctive imaging features can strongly suggest the diagnosis in patients with complex clinical presentations to assist in the guidance of appropriate and timely clinical management. Lipoma/entrapped fat seen on dorsal aspect of the cord at the superior aspect Jun 22, 2025 · Myelomeningocele, also known as spina bifida cystica, is a complex congenital spinal anomaly that results in spinal cord malformation (myelodysplasia). An MRI chest (Fig. It shares radiologic characteristics with an arachnoid cyst, but unlike a cyst, it is centered in the anterior petrous apex and often has a connection to Meckel cave [16]. The intraspinal component of the meningoceles causes widening of the spinal canal, scalloping of the posterior vertebrae, and displacing the dorsal spinal cord anteriorly. Learn about this rare condition and its management. INTRODUCTION Meningocele is the herniation of the arachnoid mater and neural elements from the enlarged neural foramen to the thecal sac. 2 a). Jun 13, 2021 · Given that lateral meningocele syndrome is a rare syndrome, the existence of lateral meningoceles is suspected only when the causative gene is detected by genetic testing. Pathology It i Feb 20, 2014 · On MRI, a petrous apex meningocele appears as nonenhancing CSF isointense signal intensity on both T1- and T2-weighted images. Mar 1, 2021 · Lateral meningocele syndrome, also known as Lehman syndrome, is an exceptionally uncommon genetic disorder, which is characterized by specific facial features and multisystem involvement, including skeletal, cardiac, and urogenital anomalies, akin to other connective tissue disorders, but it is set apart by the unique occurrence of multiple lateral meningoceles. CT myelography and MR imaging have improved detection and understanding of these cysts. 1 Lateral meningocele is rare and usually associated with neurofibromatosis type 1 (NF1) and Marfan syndrome. There was turbulent cerebrospinal fluid (CSF) flow within the presacral collection. Meningoceles and Oct 29, 2024 · Point of Care - Clinical decision support for Meningocele. Lateral meningoceles commonly occur in Left lateral thoracic meningoceles extending through and widening the left T3-4 down to T7-8 neural exit foramina. To date, the pathology of meningoencephalocele in the lateral SS has remained to be unclear in Jan 18, 2013 · Brain magnetic resonance imaging (MRI) revealed intrasphenoidal meningocystocele with infandibular recess descending into the meningocele and no other brain anomaly [Figure 1]. c. Lateral sacral lipomyelomeningocele is a rare spinal developmental anomaly. Middle cranial fossa encephaloceles are an increasingly recognized cause of epilepsy; however, they are also often encountered on neuroimaging in patients with no history of seizure. However, the presence of entrapped fat/lipoma abutting the cord, complex dural folds, as well as deformed and diminished spinal cord suggest that this is more like a developmenta Mar 9, 2025 · Lateral meningocele is a rare condition characterized by the protrusion of the spinal meninges through a weakness in the spinal column, and understanding its causes, symptoms, and treatment is crucial for affected individuals. 23. We characterized the MR imaging features of middle cranial fossa Jun 18, 2010 · MRI is particularly useful in depicting those meningocele, which do not communicate with thecal sac owing to dural scarring and consequently fail to opacify on conventional or CT-myelography. Infrequently these lesions cause symptomatic spinal cord compression [2]. Variants in this final exon of NOTCH3 interrupt the regulatory PEST domain, leading to enhanced NOTCH3 signaling due to Dec 16, 2013 · 側方髄膜瘤 (lateral meningocele) ・ 軟髄膜が椎間孔あるいは椎体の欠損部位から異常なヘルニア を起こした状態。 ・ 神経線維腫症 (neurofibromatosis) に合併して起こりやすい。 ・軟髄膜の脱出であるため、内部は脳脊髄液で満たされている。このためMRIでは腫瘤と脊髄腔との連続性がわかりやすい Oct 27, 2025 · Neurofibromatosis type 1 (CNS manifestations) Lateral meningocele syndrome Optic nerve enlargement (differential) Loeys-Dietz syndrome Vertebral scalloping Cases: Diastematomyelia Sacral cyst Diastematomyelia type I Diastematomyelia - type II Diastematomyelia type 1 Dural ectasia - neurofibromatosis Dural ectasia in Marfan syndrome Dural Aug 1, 2024 · Imaging Findings Pelvic MRI ( Figure 1 ) demonstrated a large, ovoid, well-circumscribed fluid collection in the presacral space that was contiguous with the spinal subarachnoid space through an osseous defect in the sacrum. Oct 7, 2011 · Imaging description Meningoceles develop from herniation of the leptomeninges through an intervertebral foramen. A single-center retrospective analysis was performed of fetal MRI examinations revealing open spinal dysraphism from 2004 through 2016 with available diagnostic postnatal spinal MR images in Myelocele and myelomeningocele. 8 cm right anterior meningocele traversing the anterior cribriform plate inferiorly into anterior ethmoid air cells and nasopharynx with extension into the right maxillary sinus (Fig. There Feb 7, 2022 · Lateral meningocele syndrome is a very rare condition with distinctive craniofacial dysmorphic features, multiple lateral spinal meningoceles, joint hyperextensibility, hypotonia, and skeletal, cardiac, and urogenital anomalies [1, 4]. Sep 10, 2024 · Lateral meningocele syndrome is an extremely rare hereditary connective tissue disorder characterized by multiple lateral lumbar meningoceles, distinctive facial features, joint hypermobility, hypotonia, skeletal abnormalities, congenital cardiovascular malformations, urogenital anomalies and neurologic findings 1. Markedly distorted spinal cord with reduced volume, cord displaced anteriorly and to the left. There may be a simple meningocele, or there may be neural elements within the sac [31]. MRI of the spine with coronal T2W sequence is one of the best sequences to diagnose lateral meningocele. A multilayer reconstruction was done using oxidized regenerated cellulose, a bone from the middle turbinate, a dura substitute, and a nasoseptal flap (Figure 5A - 5F). (B) T2 sequence magnetic resonance imaging (MRI) coronal cuts showing meningocele extending into the lateral recess of the sphenoid sinus. [1 – 10] In the present report, we discuss a case of a 23-year-old female who had bilateral multiple level lateral meningocoele with no neurological deficits and without any associated Lateral meningocele syndrome or Lehman syndrome, is characterized by multiple lateral meningoceles in the absence of Neurofibromatosis or Marfan’s syndrome,[4] commonly present during the fourth and the fifth decades of life (in contrast to this, our patient was 23‐years old)[1] and overall, female patients are more often afected than male patients. Lateral meningocele syndrome (LMS) is a rare genetic connective tissue disorder. 2T Open MRI. Skull defect + herniation of only CSF and meninges represent meningocele. MRI appears well-defined sac with contents having signal intensity same as CSF on all sequences with a definable defect in the skull (Fig. Thoracic meningoceles are usually associated with neurofibromatosis; nevertheless their etiology remains controversial. 8 × 1. It is a hereditary disorder that primarily affects the connective tissues. The cord was tethered at this level. Please refer to the meningocele article for a broad overview of all types of this condition. Bilateral meningoceles can be found in 10% of cases. A meningocele or one of its variants is invariably associated with the Chiari type II malformation. . Learn about treatment options available to help manage and improve quality of life. 8 c). We would like to show you a description here but the site won’t allow us. Sagittal (above left) and axial (above right) T1 MRI without contrast of the spine shows a posterior defect at the S2 level that allows the spinal canal to communicate with a cyst that is not covered by skin or subcutaneous fat. Apr 23, 2001 · The meningoceles fill with contrast during myelography, but this is unnecessary in most cases as MRI usually demonstrates that the lesion arises from the intervertebral foramen and follows CSF signal. It can be distinguished from neurofibroma, which shows low signal intensity on T1-weighted images and high signal intensity on T2-weighted images with intense contrast enhancement after gadolinium and from chordoma which T2-weighted sequences on a MRI Thoracic spine demonstrated the residual meningocele but included streak artifact from the Harrington rod. Jul 28, 2021 · Congenital spinal meningoceles are developmental anomalies of meningothelial elements displaced into the skin and subcutaneous tissues. Jul 24, 2025 · congenital meningocele encephalocele/nasal encephaloceles lateral craniopharyngeal canal meningocele encephalocele / nasal encephaloceles lateral craniopharyngeal canal acquired traumatic: closed head trauma with an anterior base of skull fracture is the most common cause of CSF rhinorrhea 2; natural barriers between the anterior cranial fossa and paranasal sinuses can be disrupted, leading to Mar 5, 2019 · Magnetic resonance imaging (MRI) demonstrated a 2. Two types of spontaneous lateral sphenoid cephaloceles were identified. It is usually Jan 1, 2008 · Composite picture of spinal MRI scan showing 8 lateral thoracic meningoceles (white arrows), 5 in the upper and 3 in the lower paravertebral area. The lesions usually are 2–3 cm in size but can be considerably larger [1]. Multiple bony anomalies and diastematomyelia were associated findings. This case highlights the diagnostic challenges and potential complications associated with the misdiagnosis of thoracic meningoceles. Apr 15, 2021 · The neuroparenchyma is frequently gliotic (Figs. 1 D) was then performed which clearly demonstrated communication of the meningoceles with the thoracic spinal canal. He also had a spinal magnetic resonance imaging that confirmed the diagnosis of a meningocele in the posterior aspect of the sacral spine. Treatment and management. This disorder manifests itself with formations of cysts Nov 7, 2024 · Lateral meningocele can mimic pseudomeningocele but contains neural elements associated with Marfan or Ehler-Danlos syndromes and NF-1. The purpose of this study was to examine differences between patients with myelomeningocele and those with myelocele with respect to brain imaging findings at fetal MRI. It is often considered the most common congenital CNS malformation. They are frequently (two-thirds) bilateral and most frequently involve the anteroinferior temporal lobe through the floor of the middle cranial fossa 1. CT Thoracic spine could not discern between fluid in the meningocele and pleural transudate. Siehe auch: caudal regression syndrome Myelomeningozele Liquorfistel Oct 17, 2018 · OBJECTIVE. Brain angiography, showed hypoplasia of the left A1 segment. Gros Meningoencephalocele in the lateral sphenoid sinus (SS) has been determined to be a rare entity often detected by cerebrospinal fluid (CSF) rhinorrhea. Introduction, Etiology, Epidemiology, Pathophysiology, Histopathology, History and Physical, Evaluation, Treatment / Management, Differential Diagnosis, Prognosis, Complications, Deterrence and Patient Education, Enhancing Healthcare Team Outcomes Sep 30, 2024 · Explore meningocele in adult brains, including causes, symptoms, diagnosis, and treatment options. TECHNIQUE: MRI without contrast, performed on a 1. Knowledge of the distinctive Apr 1, 2014 · We reviewed CT and MR imaging findings and clinical data of 26 patients with spontaneous lateral sphenoid cephaloceles to better understand anatomic contributions to pathogenesis, varying clinical and imaging manifestations, and descriptive terminology. An important feature to look for is signs of superficial siderosis, typically seen in the posterior fossa or on the surface of the cord 7. Sep 10, 2024 · Lateral meningoceles are comprised by a protrusion of the arachnoid and dura through the foramina and represent the most severe and extreme end of the dural ectasia spectrum 3. At sonography and MRI, a cystic lesion can be identified, usually along the lumbosacral region, with widening of the lamina. They are typically categorised into congenital, iatro CT chest showed unruptured enlarging bilateral lateral thoracic meningoceles causing lung compression. 4 and 5). Apr 15, 2022 · Meningoceles (also spelt meningocoele) are protrusions of the meninges through a defect or weak point in the skull or spine, usually involving the soft tissues beneath the surface of the skin. The patient had a surgical repair of the meningocele and subsequently discharged to continue physiotherapy and regular hospital follow-up visits. , 2004). Anterior sacral meningocele workup includes pelvic examination, lumbosacral MRI, and abdominal ultrasound. Dec 1, 2022 · MRI thoracic spine done preoperatively showing the large left lateral thoracic meningocele had significantly increased in size and occupied a large part of the thoracic cavity extending up to T1/T2 disc space in height and 105 mm in width. Jan 1, 2015 · 1. 3,48,49 If a fluid-filled sac of meninges without any brain parenchyma protrudes through the skull, this is defined as a meningocele. A communication with the subarachnoid space may be directly visualized as a fluid signal tract or as a jet of signal loss on T2 weighted sequences 9. The authors postulate the role of spinal trauma in some patients and the origin of t … Jun 24, 2020 · Lateral Meningoceles Lateral meningoceles are CSF containing herniations of the dura and arachnoid through the intervertebral foramina. 19 20 We suggest the term lateral sphenoidal meningocele to describe pathologies medial to V2 and the term trigeminal meningoceles as anatomically more precise for lesions lateral to the foramen rotundum and V2. spinal meningocele congenital spinal meningocele anterior sacral meningocele acquired spinal meningocele lateral thoracic meningocele A differential diagnosis for both spinal and cranial acquired meningoceles are pseudomeningoceles, which are CSF collections not lined by dura. Jul 12, 2013 · The terms transalar sphenoid meningocele and transsphenoidal and transethmoidal meningoceles have been used synonymously in literature. Mar 2, 2013 · The physiopathologic characteristics, anatomic predilection sites, and clinical and imaging features of spontaneous CSF fistulas are discussed, with emphasis on the complementary roles of CT and MR Dec 17, 2024 · Anterior sacral meningocele is characterized by herniation of the meningeal sac due to a developmental bone defect in the front of a sacrum bone. Jul 16, 2016 · Fig. Treatment: Injury level is critical to treatment planning and prognosis, because the integrity of nerve roots is key for surgical decision. Jan 19, 2025 · A good quality MRI with dedicated thin or volumetric T1 and T2 weighted sequences is essential in adequately visualizing small temporal encephaloceles 1. Fetal cervical myelomeningocele and meningocele are very rare and unique types of myelomeningocele. In the case under report, the fat attached to the neural placode was blending with the gluteal fat externally. Aug 3, 2015 · Spine MRI, performed due to progressive kyphoscoliosis, showed extensive multilobar ductal ectasia resulting in hydronephrosis, as well as erosion of the thoracic and lumbar vertebral pedicles and abnormal vertebral bony elements. OBSERVATIONS An asymptomatic adult with cervical meningocele presented as a congenital midline skin covered solid mass in the posterior aspect of the neck is Atretic meningocele is usually located in the midline of the parietal or occipital region. MRI of the meningocele did not clearly show all of the components of the spinal defect; the split cord was discovered during surgery, and therefore, the meningocele was reconsidered as myelomeningocele as it was found to contain spinal cord elements. A case of lateral sacral lipomyelomeningocele with excellent imaging detail provided by the May 17, 2024 · The right lateral thoracic meningocele occupied almost 70% of the right thoracic cavity. Mar 9, 2011 · Meningocele and Meningoencephalocele Meningoencephalocele is a congenital protrusion of brain tissue covered by skin through a defect in the skull (cranium bifidum or cranioschisis). Treatment and Surgical approaches Many arachnoid cysts are asymptomatic and are discovered incidentally {Williams, 2002 Aug 12, 2025 · Meckel's cave, also known as trigeminal cave, trigeminal cavity, or Meckel cavity, is a cerebrospinal fluid-containing dural pouch in the middle cranial fossa and opening from the posterior cranial fossa that houses the trigeminal ganglion. (b) Cervical meningocele with a fibroglial stalk eccentrically located and extending from the dorsal surface of the spinal cord to the lateral aspect of the meningocele sac. T6-10 left lateral thoracic meningocele with complex dural folds. Lateral meningocoeles may be unilateral or bilateral (as in the present case) or may be solitary or multiple. Lateral expansion of meningocele through left T8/9 and T9/10 foramina. In images of computed tomography (CT) and magnetic resonance imaging (MRI), intrasphenoidal encephalocele herniating through a defect of the left lateral sphenoid sinus wall was determined. Preoperative magnetic resonance images of the cervical meningocele T1-weighted sagittal magnetic resonance image shows dorsal tented bulge of the cervico-medullary junction. Pathology Associations Bilateral lateral meningoceles are seen within neural foramina at visualized thoracic levels. It is a rare, typically asymptomatic lesion that occurs more commonly on the right side [2]. DISEASE: 側方髄膜瘤症候群» English version Prenatal diagnosis of myelomeningocele remains challenging for obstetricians, ultrasonographers, and radiologists, although the increased maternal serum alpha-fetoprotein level aids in the confirmative diagnosis. It was first described in 1837. It is associated with morphological changes similar to those of other connective tissue disorders, with the unique distinction of multiple, often bilateral and large, lateral meningoceles herniating through the spinal foramina. FINDINGS: T2-weighted axial MRI shows high T2 signal in the left lateral recess of the sphenoid sinus with extension from the middle cranial fossa. Keywords: Atretic meningocele; Etiopathogenesis; Frequency; Anomaly associations and imaging findings Jun 22, 2025 · Spina bifida is a type of neural tube defect/spinal dysraphism which can occur to varying degrees of severity. In myelocele the placode (arrowhead) is flush with the skin surface (arrow The meningocele was later identified on the left sphenoid sinus. The sacral meningocele may be congenital or acquired. The diagnosis is made on CT with intrathecal contrast or MRI by demonstrating fluid attenuation of the mass and continuity of cerebrospinal Jul 30, 2022 · Anterior sacral meningocele is a congenital defect seen in the anterior aspect of the spine. It is defined as a meningeal cyst that occurs in the presacral space secondary to agenesis of a portion of the anterior sacrum. Prenatal diagnosis of cervical myelomeningocele and meningocele should include the An 18 year-old male undergoes MRI for low back pain. MRI scans are unlikely to be performed in infancy in the absence of neurological symptoms suggestive of meningoceles. Meningocele should be included in differential diagnosis of posterior mediastinal cysts. Jun 23, 2016 · NOTCH3-related lateral meningocele syndrome (LMS) is characterized by multiple lateral spinal meningoceles (protrusions of the arachnoid and dura through spinal foramina), distinctive facial features, joint hyperextensibility, hypotonia, and skeletal, cardiac, and urogenital anomalies. MATERIALS AND METHODS. Meningocele causes symptoms that can affect daily life. In this paper we will try to deal with the etiopathogenesis, frequency, associated anomalies and with imaging findings. 4 (a) Cervical meningocele with a fibroglial band extending from the dorsal surface of the spinal cord to the dome of the meningocele. The features were overall in keeping with an anterior sacral meningocele (ASM). 38-year-old female with intrasphenoidal meningocele. Nerve rootlets can be seen transversing the fluid space to reach the right side. It also reaffirms MRI as the gold standard for diagnosis. The fact that T2-weighted images on MRI are superior for detecting abnormalities with a water component makes the detection of lateral and anterior meningocele using MRI feasible. Dec 1, 2012 · MRI Sag T2 right far lateral section for end on view of neural foramen show abnormal T2 hyper intensity in the region of neural foramen at C6-7 and C7-D1 level with non visualization of normal punctate iso intense dots of nerve roots. Epidemiology It is one of the most common congenital CNS anomalies and is thought to occur i Nov 23, 2012 · Extramedullary cysts of the spinal canal may produce a slowly progressive myelopathy, myeloradiculopathy, or radiculopathy [1]. Jul 11, 2025 · MRI Pseudomeningoceles follow CSF signal on all sequences. Jan 4, 2008 · Lateral meningocele is a CSF-filled protrusion of dura mater and arachnoid that extends laterally through an enlarged intervertebral foramen into the paraspinal, intrathoracic, or retroperitoneal region. 3 Since lateral meningocele is May 23, 2014 · (A) Computed tomography scan axial cuts without contrast at the level of the pterygopalatine fossa (PPF) showing the meningocele extending into the lateral recess of the sphenoid sinus. Introduction Lateral meningocele syndrome is a rare disorder characterized by the widespread presence of protrusions of the arachnoid and the dura matter extending laterally through inter- or intra-vertebral foramina into the paraspinal, retroperitoneal, or intrathoracic region (Oner et al. Lateral meningocele syndrome is a rare disorder characterized by the widespread presence of protrusions of the arachnoid and the dura matter extending laterally through inter- or intravertebral foramina into the paraspinal, retroperitoneal, or intrathoracic region. Sagittal T2-weighted (1a), sagittal T1-weighted (1b), and axial T1-weighted (1c) and axial T2-weighted (1d) images at the level of S1 are provided. 2 Although lateral meningocele is mostly asymptomatic, it may cause paraparesis in case of spinal cord involvement. (A) Computed tomography scan axial cuts without contrast at the level of the pterygopalatine fossa (PPF) showing the meningocele extending into the lateral recess of the sphenoid sinus. MRI of the brain and spine showed features of CSF hypotension, explaining the headaches. MR imaging currently is the imaging modality of choice for the diagnosis, and CT myelography is most Rare types of cervical dysraphism include anterior and lateral cervical meningocele and double cervical and lumbosacral meningocele. In some cases, these lateral meningoceles can cause pain and discomfort due to their A case of intrathoracic meningocele is reported, and 95 cases from the literature are reviewed. Terminology Spina bifida in its strictest sense means defective fu Apr 2, 2002 · Lateral Thoracic Meningocele: Clinical: Represents a herniation of the leptomeninges through the neural foramina. Lateral meningocele is a rare presentation of spinal dysraphism characterized by extensions of the dura and arachnoid through an enlarged neural foramen. b. Typically, lateral and anterior meningocoeles are occult lesions that are not visible externally. Double cervical and lumbosacral meningocele can be identified during childhood, [26, 27] whereas anterior and lateral cervical meningocele is mainly diagnosed in adulthood, except for a few cases in which Skull base meningoceles and encephaloceles are developmental or acquired defects that result in outward protrusion or herniation of the dura and arachnoid (meningocele), sometimes with involvement of the brain parenchyma (encephalocele). Mar 16, 2012 · On MRI, lateral meningocele appears as a rounded or oval mass with homogeneous signal intensity typical of CSF and is usually associated to scalloping of the vertebral body. kx 67fkr hrlmh f0mwntm 0mvjn ha28 hbjnz pxgx reyhhj ofl