Sphenoid Encephaloceles: Disease Management and Identification of Lesions Within the Lateral Recess of the Sphenoid Sinus

Lai, Stephen Y.; Kennedy, David W.; Bolger, William E.

doi:10.1097/00005537-200210000-00018

Cited by 121 publications

(144 citation statements)

References 12 publications

Supporting

Mentioning

137

Contrasting

Unclassified

Order By: Relevance

“…11,15,28,42,44 Osseous defects located in the anteromedial portion of the middle cranial fossa, or more medially in the region of the sphenoidal wing foramina, could lead to the genesis of encephaloceles protruding into the sphenoid sinus or its lateral recess (anteromedial or lateral sphenoidal encephaloceles). 2,3,5,6,9,10,12,[25][26][27]33,37,40,41,52,54,58 Patients harboring this type of lesion classically present during adulthood with signs and symptoms of CSF rhinorrhea, the subclinical courses of which may lead to recurrent episodes of meningitis and delayed diagnosis. 13,23,24 Herniations of temporal lobe parenchyma and/or meninges may also involve the posterior temporalis bone at the level of the tegmen tympani (posteroinferior or aural encephaloceles).…”

Section: Classificationmentioning

confidence: 99%

“…25 Although the majority of cases are associated with an initiating process (such as a trauma, neoplasm, inflammatory condition, or previous surgical procedure), these circumstances may also be absent, thus leading to the less common diagnosis of spontaneous encephaloceles of idiopathic origin. 25,26,56 Encephaloceles are reportedly most common in the anterior cranial fossa, but they occur in the middle cranial fossa as well. Temporal lobe encephaloceles are defined as pathological herniations of brain parenchyma through dura mater and bone and involve the middle cranial fossa or the laterotemporal cranial vault.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous encephaloceles of the temporal lobe

Wind

Caputy²,

Roberti³

2008

FOC

View full text Add to dashboard Cite

Encephaloceles are pathological herniations of brain parenchyma through congenital or acquired osseus-dural defects of the skull base or cranial vault. Although encephaloceles are known as rare conditions, several surgical reports and clinical series focusing on spontaneous encephaloceles of the temporal lobe may be found in the otological, maxillofacial, radiological, and neurosurgical literature. A variety of symptoms such as occult or symptomatic CSF fistulas, recurrent meningitis, middle ear effusions or infections, conductive hearing loss, and medically intractable epilepsy have been described in patients harboring spontaneous encephaloceles of middle cranial fossa origin. Both open procedures and endoscopic techniques have been advocated for the treatment of such conditions. The authors discuss the pathogenesis, diagnostic assessment, and therapeutic management of spontaneous temporal lobe encephaloceles. Although diagnosis and treatment may differ on a case-by-case basis, review of the available literature suggests that spontaneous encephaloceles of middle cranial fossa origin are a more common pathology than previously believed. In particular, spontaneous cases of posteroinferior encephaloceles involving the tegmen tympani and the middle ear have been very well described in the medical literature.

show abstract

Section: Classificationmentioning

confidence: 99%

mentioning

confidence: 99%

Spontaneous encephaloceles of the temporal lobe

Wind

Caputy²,

Roberti³

2008

FOC

View full text Add to dashboard Cite

show abstract

“…Basal encephaloceles include transethmoidal, sphenoethmoidal, transsphenoidal, and frontosphenoidal varieties. Transsphenoidal and transethmoidal encephaloceles are the most common varieties, although they themselves are very rare (Fig 5) (8,13,14). The former project through a defect in the floor of the sella and into the nasal cavity, whereas the latter project through a midline or cribriform plate defect into the nasal cavity.…”

Section: Encephalocelesmentioning

confidence: 99%

“…Transsphenoidal encephaloceles may be associated with a cleft palate and may also project into the oral cavity. A transsphenoidal encephalocele splays the sphenoid bone, displacing the cavernous sinus laterally, and is positioned anterior to the dorsum sella (8,13,14). Important structures such as the pituitary gland, hypothalamus, optic nerves and chiasm, and anterior third ventricle are typically involved in transsphenoidal encephaloceles (8,13,14).…”

Section: Encephalocelesmentioning

confidence: 99%

Lumps and Bumps on the Head in Children: Use of CT and MR Imaging in Solving the Clinical Diagnostic Dilemma

et al. 2004

View full text Add to dashboard Cite

“…Lai et al (8) reported an incidence of encephalocele or meningocele in the skull base about 1/35,000.…”

Section: █ Discussionmentioning

confidence: 99%

Lateral craniopharyngeal canal: anatomical cause of spontaneous rhinorrhea -a case report and literature review

Jing

Zhao²,

Zhao³

et al. 2014

Turkish Neurosurgery

View full text Add to dashboard Cite

Surgery is the only effective treatment method of spontaneous rhinorrhea. Transcranial approach and endoscopic transnasal approach are the surgical options. In recent years, a small amount of similar cases were reported in the literature (4,10,11).We report a patient with spontaneous rhinorrhea who had a lateral craniopharyngeal canal and the brain tissue protruded into the sphenoid sinus through this canal. The patient underwent surgical treatment via pterional craniotomy and recovered well after a follow-up period of 15 months. █ CASE REPORTA 58 year-old male patient admitted to our clinic for a 6 month history of "repeated fluid drainage from the left nasal cavity". The fluid was clear, aggravating as bow or bent, without headache and fever. His neurological examination was normal.█ INTRODUCTION R hinorrhea is common after trauma or operations. Spontaneous rhinorrhea is very rare. Cerebrospinal fluid (CSF) fistula (rhinorrhea) requires 2 anatomical conditions; first is the dural tear and the second is anatomical link with a sinus or nasal cavity.Lateral craniopharyngeal canal (Sternberg's canal) is a concept proposed by Maximilian Sternberg in 1888, which refers to the sphenoid dysplasia, appeared in the embryonic fissure (3,6,12). Lateral craniopharyngeal canal is only covered by a weak connective tissue. Its incidence is low (about 1/35,000). This canal is an important anatomical factor on the protrusion of brain tissue into the sphenoid sinus through the sphenoid sinus wall (3). Spontaneous CSF leakage may easily develop through the dural defect and lateral craniopharyngeal canal because it is a narrow passage and repeated impacts of CSF facilitate protrusion of the brain tissue into the sphenoid sinus.The aim of this report is to investigate the pathogenesis and surgical treatment of encephalocele located in the sphenoid sinus and presented with spontaneous rhinorrhea. The data of a patient with sphenoid sinus encephalocele was analyzed in association with the review of literature. The patient admitted to our clinic with rhinorrhea from the left nasal cavity. Cranial magnetic resonance imaging revealed bone defects in the left sphenoid sinus wall, and the presence of brain tissue and cerebrospinal fluid (CSF) in the sphenoid sinus. The patient underwent dural repair via left pterional approach. Rhinorrhea disappeared after surgery. The pathogenesis of the encephalocele in the sphenoid sinus is not clear. It may be related to the presence of lateral craniopharyngeal canal, extra-gasification in the sphenoid sinus, high intracranial pressure or other factors. It is very important to diagnose accurately the source of CSF fistula in preoperative period, choose the specific operation technique, and follow-up the patient for a long time period.

show abstract

Sphenoid Encephaloceles: Disease Management and Identification of Lesions Within the Lateral Recess of the Sphenoid Sinus

Cited by 121 publications

References 12 publications

Spontaneous encephaloceles of the temporal lobe

Spontaneous encephaloceles of the temporal lobe

Lumps and Bumps on the Head in Children: Use of CT and MR Imaging in Solving the Clinical Diagnostic Dilemma

Lateral craniopharyngeal canal: anatomical cause of spontaneous rhinorrhea -a case report and literature review

Contact Info

Product

Resources

About