1/18. Spontaneous CSF otorrhea caused by abnormal development of the facial nerve canal.In two patients with surgically proved CSF fistula through the facial nerve canal, MR and CT examinations showed smooth enlargement of the geniculate fossa with CSF signal. In the clinical setting of CSF otorrhea or rhinorrhea, the presence of an enlarged labyrinthine facial nerve canal and enlarged geniculate fossa on CT scans and CSF intensity on MR images strongly suggests a CSF fistula through the facial nerve canal.- - - - - - - - - - ranking = 1keywords = nerve (Clic here for more details about this article) |
2/18. Gustatory otalgia and wet ear syndrome: a possible cross-innervation after ear surgery.HYPOTHESIS: The chorda tympani and Arnold's nerves have close approximation to each other and their cross-innervation is possible after ear surgery. STUDY DESIGN: A retrospective study was performed with a temporal bone pathology case and two clinical cases as representatives of such a possibility. patients had severe otalgia and wet ear during gustatory stimulation. methods: A temporal bone pathology case was studied under a light microscope. earache and/or wet ear were provoked during gustatory stimulation. Wet ear was tested with iodine-starch reaction after the subject tasted lemon juice. RESULTS: The temporal bone specimen has clusters of regenerated fibers in the tympanic cavity in the area of the chorda tympani and Arnold's nerves, suggesting a possibility of mixing. There are regenerated fibers in the iter chordae anterius, showing successful bridging of the chorda tympani nerves across a long gap. Detachment of the skin over the operated mastoid bowl obscured signs in one clinical case. Another clinical case of gustatory wet ear showed objective evidence of cross-innervation with iodine-starch reaction. CONCLUSION: The detachment procedure and iodine-starch reaction were the proofs that the signs were related to regenerated fibers. This is the first report of gustatory otalgia and wet ear after ear surgery.- - - - - - - - - - ranking = 0.42857142857143keywords = nerve (Clic here for more details about this article) |
3/18. Prevention of cerebrospinal fluid leakage and delayed loss of preserved hearing after vestibular schwannoma removal: reconstruction of the internal auditory canal in the suboccipital transmeatal approach--technical note.The suboccipital transmeatal approach uses packing of a muscle or fat graft into the internal auditory canal (IAC) to prevent postoperative cerebrospinal fluid (CSF) leakage. However, preserved hearing after removal of vestibular schwannomas may decline over time because of the progressive constriction of cochlear vascular supply due to scarring of the IAC. We propose a surgical technique for IAC reconstruction, which separates the preserved cochlear nerve and vasculature from the graft, and regains the CSF space in the IAC. Prior to the drilling of the posterior wall of the IAC, the dura mater of the petrous bone forming the posterior wall of the IAC is harvested for IAC reconstruction. After completion of tumor removal, a "roof" of the IAC is reconstructed using the dura mater, and a muscle or fat graft soaked with fibrin glue is placed on the "roof" of the IAC. The IAC was reconstructed using this technique in 26 consecutive patients with vestibular schwannomas who underwent tumor removal via the suboccipital transmeatal approach. Postoperative magnetic resonance imaging confirmed the regained CSF space in the IAC. No delayed hearing loss occurred in four patients with preserved hearing. No CSF leakage occurred after surgery. This new technique of IAC reconstruction may prevent delayed hearing loss as well as postoperative CSF leakage after removal of vestibular schwannomas via the suboccipital transmeatal approach.- - - - - - - - - - ranking = 0.14285714285714keywords = nerve (Clic here for more details about this article) |
4/18. Mature teratoma of the middle ear.OBJECTIVE: The authors report a case of mature teratoma of the middle ear in a 3-year-old girl with a 1-year history of otitis media. methods AND RESULTS: Radiologic investigation revealed a partially cystic lesion of the petrous portion of the right temporal bone. It produced opacification of the middle ear as well as destruction of septal air cells. The patient underwent a subtotal petrosectomy. Histologically, the tumor was composed of an intimate admixture of mature tissues representing all three germ layers, including brain, myelinated nerve trunks, skeletal muscle, bone, immature cartilage, seromucinous glands, and respiratory epithelium. Of note within the brain tissue was choroid plexus within an ependyma-lined rudimentary ventricle. Immunohistochemical studies were also performed. Twenty months after surgery, the patient was well, with complete recovery from symptoms. CONCLUSION: Teratomas of the middle ear are rare neoplasms. Only a few examples have been reported. As a rule, they are cured by resection and do not require adjuvant therapy.- - - - - - - - - - ranking = 0.14285714285714keywords = nerve (Clic here for more details about this article) |
5/18. Spontaneous onset of CSF otorrhea from a facial canal fistula in an adult: case report.The purpose of this report is to describe a 64-year-old woman who presented an 8 month history of recurrent spontaneous cerebrospinal fluid leakage into the left middle ear. High resolution computed tomography and computed tomography cisternography showed only a mild protrusion of the tympanic segment of the left facial canal into the ipsilateral middle ear but no definitive fistula. At surgical exploration, cerebrospinal fluid leakage resulted from a fistula in the tympanic segment of the left facial canal. In conclusion, in the adult patient reported herein, the fistula leading to spontaneous CSF otorrhea was identified definitely only intraoperatively. Furthermore, although there were no signs or symptoms of facial nerve dysfunction, it was located in a rare site such as the second segment of the facial canal. When the clinical history, physical examination, and laboratory analysis are strongly suggestive for spontaneous CSF otorrhea, surgical exploration is mandatory even if neuroimaging evaluation is negative or questionable.- - - - - - - - - - ranking = 0.14285714285714keywords = nerve (Clic here for more details about this article) |
6/18. Trauma to the temporal bone: diagnosis and management of complications.The temporal bone contains important sensory and neural structures that may be damaged in patients who experience craniofacial trauma. The most serious complications of temporal bone trauma include facial nerve paralysis, cerebrospinal fluid leak, and hearing loss. Injury to the temporal bone often presents with subtle signs and symptoms, such as otorrhea, facial palsy, and hemotympanum. A high index of suspicion and a thorough knowledge of how to diagnose injury to the temporal bone are paramount in treating patients who present to the emergency room with craniofacial trauma. This article provides an overview of temporal bone trauma, outlines a methodical approach to the patient with temporal bone trauma, details four cases, and describes the treatment of complications.- - - - - - - - - - ranking = 0.14285714285714keywords = nerve (Clic here for more details about this article) |
7/18. arachnoid cyst of the fallopian canal: a surgical challenge.OBJECTIVE: Spontaneous cerebrospinal fluid (CSF) leaks from the fallopian canal are exceedingly rare, with only 6 reports appearing in the world literature. We report a seventh case that is unique in that it involves an arachnoid cyst of the fallopian canal and an associated facial nerve palsy. STUDY DESIGN: Case report. SETTING: International tertiary care referral center. CONCLUSION: CSF otorhinorrhea associated with a facial nerve palsy may be indicative of an arachnoid cyst of the fallopian canal. These fistula are extremely rare. Surgical management involves sealing the fistula while preserving facial nerve function and is extremely challenging.- - - - - - - - - - ranking = 0.42857142857143keywords = nerve (Clic here for more details about this article) |
8/18. Congenital tuberculosis with facial nerve palsy.Congenital tuberculosis is unusual, and central nervous system involvement is even more rare. We report a case of congenital tuberculosis presenting with facial palsy and purulent otorrhea.- - - - - - - - - - ranking = 0.57142857142857keywords = nerve (Clic here for more details about this article) |
9/18. Recurrent meningitis and a congenital perilymph fistula.In any child with recurrent meningitis, the presence of a congenital perilymph fistula must be entertained. All of the patients must have an audiologic assessment, and if a sensorineural loss is demonstrated, CT of the temporal bones should be performed. CT is excellent in identifying malformations within the temporal bones, fistulous tracts, soft tissue densities in the middle ear, and defects in the tegmen tympani. Although MRI may provide superior discrimination of the audiovestibular and facial nerves and cerebellopontine angle, presently it does not offer any distinct advantages over CT in evaluation of the inner ear. When a fistula is suspected, an exploratory tympanotomy is recommended, and any CSF leak is sealed with muscle.- - - - - - - - - - ranking = 0.14285714285714keywords = nerve (Clic here for more details about this article) |
10/18. Gradenigo syndrome: a case report and review of a rare complication of otitis media.otitis media is a commonly seen condition in the Emergency Department. The complications of otitis media that were seen frequently in the preantibiotic era are now rare today. We report a case of a diabetic man who presented with otorrhea, retro-orbital pain, and diplopia secondary to a sixth cranial nerve palsy--Gradenigo syndrome. This syndrome occurs as infection from the middle ear spreads medially to the petrous portion of the temporal bone. The emergency physician should consider this condition in patients with chronic ear drainage or pain not responsive to conventional treatment or in any patient with a cranial nerve palsy in the setting of acute or chronic otitis. work-up should include a CT scan of the temporal bones. otolaryngology consultation and admission for i.v. antibiotics is recommended.- - - - - - - - - - ranking = 0.28571428571429keywords = nerve (Clic here for more details about this article) |
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