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Neurosurgery Clinics of North America Jan 1990Acoustic neuromas are benign schwannomas that arise from the vestibular portion of the eighth cranial nerve. Small tumors confined to the internal auditory canal may be... (Review)
Review
Acoustic neuromas are benign schwannomas that arise from the vestibular portion of the eighth cranial nerve. Small tumors confined to the internal auditory canal may be removed via an extradural subtemporal approach. Tumors that involve the cerebellopontine angle require posterior fossa craniotomy utilizing either the suboccipital or translabyrinthine technique. The choice of surgical approach depends primarily on the size of the tumor, its location, and the status of hearing in the involved ear. Operative mortality is very low. The most common sources of morbidity are hearing loss and facial nerve dysfunction.
Topics: Craniotomy; Humans; Neurofibromatosis 2; Neuroma, Acoustic; Quality of Life; Survival Analysis
PubMed: 2135969
DOI: No ID Found -
Consensus Statement. National...The National Institutes of Health Consensus Development Conference on Acoustic Neuroma brought together neurosurgeons, radiosurgeons, otologists, neurologists,... (Review)
Review
The National Institutes of Health Consensus Development Conference on Acoustic Neuroma brought together neurosurgeons, radiosurgeons, otologists, neurologists, audiologists, otolaryngologists, and other health care professionals as well as the public to reach agreement (1) on defining the clinical types of acoustic neuroma, (2) on which procedures are useful for screening and diagnosis, (3) on the options available for managing the disorder as well as the complications of treatment, and (4) on the key clinical and biological areas for future research. Following 2 days of presentations by experts and discussion by the audience, a consensus panel weighed the evidence and prepared their consensus statement. Among their findings, the panel concluded that (1) the term vestibular schwannoma is preferred over acoustic neuroma as these tumors are composed of Schwann cells and typically involve the vestibular rather than the acoustic division of the 8th cranial nerve; (2) treatment for vestibular schwannoma must be individualized and requires an experienced, well-integrated, multidisciplinary team approach; (3) surgery remains the treatment of choice, but research is needed on the relative benefits and risks of all management options, including pharmaceutical and other alternative medical treatments such as tumor suppressing agents; (4) routine intraoperative monitoring of the facial nerve should be included in surgical therapy for vestibular schwannoma; (5) neurofibromatosis 2 (NF2) should be carefully considered in all patients newly diagnosed with vestibular schwannoma, and, when found, genetic evaluation and counseling should be provided for all relevant family members; and (6) a registry for all patients with vestibular schwannoma, whether undergoing observation or active management, should be established.
Topics: Forecasting; Humans; Mass Screening; Neuroma, Acoustic; Research; Terminology as Topic
PubMed: 1840823
DOI: No ID Found -
Neurosurgery Clinics of North America Apr 2008
Topics: History, 20th Century; Humans; Neuroma, Acoustic
PubMed: 18534332
DOI: 10.1016/j.nec.2008.04.001 -
Otolaryngologic Clinics of North America Apr 2012By the nature of their origin, acoustic neuromas always result in some degree of vestibular dysfunction. The implications of this are typically more notable... (Review)
Review
By the nature of their origin, acoustic neuromas always result in some degree of vestibular dysfunction. The implications of this are typically more notable postoperatively, rather than preoperatively or intraoperatively. However, preoperative vestibular assessment can have implications on operative approach and postoperative rehabilitation. This paper details the preoperative vestibular findings that correlate with differing stages of acoustic neuroma growth. It also describes the findings that help localize the tumor origin to either the inferior or superior divisions of the vestibular nerve. Finally, and probably most importantly, we discuss the causes of persistent postoperative vestibular symptoms.
Topics: Electronystagmography; Female; Humans; Male; Monitoring, Intraoperative; Neuroma, Acoustic; Postoperative Care; Preoperative Care; Rotation; Sensation Disorders; Sensitivity and Specificity; Vestibular Diseases; Vestibular Evoked Myogenic Potentials; Vestibular Function Tests
PubMed: 22483818
DOI: 10.1016/j.otc.2011.12.004 -
Annals of the Academy of Medicine,... Sep 1991Acoustic neuroma is the commonly used term for benign schwannomas arising from the vestibular divisions of the eighth cranial nerve. They are relatively common lesions... (Review)
Review
Acoustic neuroma is the commonly used term for benign schwannomas arising from the vestibular divisions of the eighth cranial nerve. They are relatively common lesions and present a therapeutic challenge. Three approaches are used for removal of acoustic neuromas: middle fossa, retrosigmoid, and translabyrinthine. Each approach has advantages and disadvantages. The advantage of the middle fossa and retrosigmoid approaches is the possibility of preserving hearing. Both require more brain retraction and have greater risk to the facial nerve than the translabyrinthine approach. The translabyrinthine approach sacrifices hearing but has lower incidence for all other complications. The details of each of these surgical approaches are described. The advantages and disadvantages of each approach are detailed, and then the complications which are common to the procedures are described.
Topics: Female; Humans; Male; Methods; Neuroma, Acoustic
PubMed: 1781654
DOI: No ID Found -
The New England Journal of Medicine Apr 2021
Review
Topics: Humans; Incidence; Magnetic Resonance Imaging; Microsurgery; Neuroma, Acoustic; Quality of Life; Radiosurgery; Watchful Waiting
PubMed: 33826821
DOI: 10.1056/NEJMra2020394 -
Journal of Clinical Neuroscience :... Apr 2005To define the clinical characteristics of cystic acoustic neuroma, we retrospectively analyzed 22 patients with cystic acoustic neuroma and reviewed the literature with...
To define the clinical characteristics of cystic acoustic neuroma, we retrospectively analyzed 22 patients with cystic acoustic neuroma and reviewed the literature with regard to clinical manifestation, imaging features, diagnosis, surgical procedures and prognosis. An acoustic neuroma was defined as cystic according to the following criteria: the presence of hypodense/hypointense areas on CT or MRI, the identification of cystic elements at operation and histological verification. At the end of surgery, the facial nerve was anatomically intact in 86.4% of cystic acoustic neuromas. Complete removal of the tumor was achieved in 18 cases (81.8%). We conclude that patients with cystic acoustic neuroma need prompt surgery with special attention paid to the preservation of the facial nerve.
Topics: Adolescent; Adult; Aged; Facial Nerve; Female; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Neuroma, Acoustic; Neurosurgical Procedures; Prognosis; Tomography, X-Ray Computed; Treatment Outcome
PubMed: 15851076
DOI: 10.1016/j.jocn.2004.03.040 -
Seminars in Perioperative Nursing Oct 2000This article reviews the definition of acoustic neuroma, prevalence, growth, symptoms, diagnosis, multiple treatment options, postoperative complications, alternative...
This article reviews the definition of acoustic neuroma, prevalence, growth, symptoms, diagnosis, multiple treatment options, postoperative complications, alternative therapies, and patient and health care provider resources.
Topics: Humans; Neuroma, Acoustic; Postoperative Care
PubMed: 12029771
DOI: No ID Found -
The New Zealand Medical Journal Nov 2007
Review
Topics: Humans; Medical Oncology; Neuroma, Acoustic; Neurosurgical Procedures; Radiosurgery
PubMed: 18264185
DOI: No ID Found -
Neurosurgery Oct 1981The acquisition and application of new techniques in diagnostic screening have changed the approach to patients with suspected acoustic neuroma. In this paper, we review... (Review)
Review
The acquisition and application of new techniques in diagnostic screening have changed the approach to patients with suspected acoustic neuroma. In this paper, we review the extensive recent literature on acoustic tumors and present a critical analysis of the various diagnostic investigations. The older tests for cerebrospinal fluid protein, vestibular testing, and arteriography have been supplanted by modern audiometry with acoustic reflex testing, brain stem evoked responses, and computed tomography (CT). The various types of plain radiography are confirmed as an extremely useful screening modality. CT is insufficiently sensitive to serve as a primary screening procedure, but is a valuable confirmatory test. We propose a logical method of screening patients suspected of having an acoustic neuroma that can be applied by any practitioner in any clinical situation.
Topics: Adult; Aged; Audiometry; Audiometry, Evoked Response; Caloric Tests; Electronystagmography; Humans; Middle Aged; Neuroma, Acoustic; Reflex, Acoustic; Tomography, X-Ray; Tomography, X-Ray Computed
PubMed: 7029342
DOI: 10.1227/00006123-198110000-00021