Ultrastructural pathology of the vestibule in patients with acoustic neurinomas: secondarily operated cases after posterior fossa operation

1990 ◽  
Vol 247 (2) ◽  
Author(s):  
Y. Yaku ◽  
T. Kanda ◽  
A. Komatsuzaki
Keyword(s):  
Posterior Fossa ◽  
Ultrastructural Pathology ◽  
Acoustic Neurinomas ◽  
Posterior Fossa Operation

Surgery for Acoustic Neurinomas: A Proposal

1984 ◽  
Vol 93 (4_suppl) ◽  
pp. 59-62
Author(s):  
William W. Montgomery
Keyword(s):  
Hearing Loss ◽  
Adipose Tissue ◽  
Posterior Fossa ◽  
Vestibular Schwannomas ◽  
Middle Fossa ◽  
Internal Auditory Meatus ◽  
Tumor Removal ◽  
Acoustic Neurinomas ◽  
Improved Technique ◽  
Suboccipital Approach

Surgery for resection of acoustic neurinomas (vestibular schwannomas) has been performed by way of the middle fossa craniotomy, suboccipital route, and translabyrinthine operation. The author has preferred the translabyrinthine operation for small tumors (less than 2 cm) for patients with poor hearing and the suboccipital approach for large tumors and for small tumors when attempting to preserve hearing. This paper proposes an operation designed for better tumor removal results, an improved technique for preservation of hearing, and fewer complications. During the first part of the operation, the posterior fossa dura posterior to the labyrinth, and also bound by the superior petrosal and sigmoid venous sinuses, is exposed by the mastoidectomy route. The mastoid is obliterated with adipose tissue. The suboccipital route is then used to resect large tumors and small tumors when attempting to preserve hearing. This operation would 1) facilitate dissection of the internal auditory meatus, 2) reduce chance for injury to the labyrinth with a resulting total hearing loss, and 3) eliminate the rather frequent (less than 10%) incidence of postoperative CSF otorhinorrhea and its complications.

Subdural tension pneumocephalus after posterior fossa operation: Is the inverted bottle phenomenon the only causative factor?

1981 ◽  
Vol 15 (4) ◽  
pp. 303-305 ◽  
Author(s):  
Guillermo Leunda ◽  
Jose M. Cabezudo ◽  
Eduardo Areitio ◽  
Jesus Vaquero ◽  
Fernando Gilsanz
Keyword(s):  
Posterior Fossa ◽  
Causative Factor ◽  
Tension Pneumocephalus ◽  
Posterior Fossa Operation

Air Embolism through a Ventriculoatrial Shunt during Posterior Fossa Operation: Case Report

Neurosurgery ◽  
1985 ◽  
Vol 16 (1) ◽  
pp. 83-84
Author(s):  
Daniel G. Nehls ◽  
Philip L. Carter
Keyword(s):  
Case Report ◽  
Posterior Fossa ◽  
Air Embolism ◽  
Clinical Aspects ◽  
Unusual Complication ◽  
Sitting Position ◽  
Potential Complication ◽  
Ventriculoatrial Shunt ◽  
Operation Case ◽  
Posterior Fossa Operation

Abstract An unusual complication of air embolism through a ventriculoatrial shunt occurred in a patient undergoing posterior fossa operation in the sitting position. Because ventriculoatrial shunts are uncommon, this potential complication may not be widely recognized. A case is presented and the clinical aspects are discussed. (Neurosurgery 16:83–84, 1985)

Spontaneous Cerebellar Hematoma in Children: Report of Two Cases and Review of the Literature

Neurosurgery ◽  
1982 ◽  
Vol 11 (3) ◽  
pp. 426-429 ◽  
Author(s):  
Mario Ammirati ◽  
Tadanori Tomita
Keyword(s):  
Posterior Fossa ◽  
Ventriculoperitoneal Shunt ◽  
Physical Condition ◽  
Blood Dyscrasia ◽  
Review Of The Literature ◽  
Posterior Fossa Operation

Abstract Two children with hydrocephalus due to a spontaneous intracerebellar hematoma secondary to blood dyscrasia were treated successfully with a ventriculoperitoneal shunt. They represent the first documented cases of spontaneous intracerebellar hemorrhage in children treated successfully without posterior fossa operation. The size of the hematoma. the severity of the hydrocephalus, and the patient's neurological and physical condition are important factors in choosing the mode of treatment.

Intralabyrinthine Acoustic Neurinomas

1980 ◽  
Vol 88 (4) ◽  
pp. 455-461 ◽  
Author(s):  
Richard W. Babin ◽  
Lee A. Harker
Keyword(s):  
Posterior Fossa ◽  
Internal Auditory Canal ◽  
Bone Destruction ◽  
Lamina Cribrosa ◽  
The Other ◽  
Scala Tympani ◽  
Complete Filling ◽  
Utricular Macula ◽  
Acoustic Neurinomas ◽  
Temporal Bones

Two temporal bones are presented that contain acoustic neurinomas unsuspected during life and anatomically limited to the perilymphatic labyrinth. One tumor occupies the modiolus and scala tympani of the cochlea without involving the internal auditory canal. The other tumor originates in the fibers below the utricular macula and spares both the macula and the lamina cribrosa. Neither case demonstrates bone destruction. Even if these tumors had been suspected during life, tomograms would have been normal and the posterior fossa myelogram would have shown complete filling of the internal auditory canal.

Segmental Arachnoiditis after Posterior Fossa Operation

Neurosurgery ◽  
1981 ◽  
Vol 9 (2) ◽  
pp. 183-184 ◽  
Author(s):  
Fred Epstein ◽  
Jeffrey Allen
Keyword(s):  
Case Report ◽  
Posterior Fossa ◽  
Tissue Diagnosis ◽  
Spinal Axis ◽  
The Subject ◽  
4Th Ventricle ◽  
Posterior Fossa Operation

Abstract A 16-year-old boy was noted to have an apparent intradural sacral mass 6 weeks after the excision of a 4th ventricle ependymoma. Although spinal axis radiation was considered, it was decided to make a definitive tissue diagnosis. At sacral laminectomy, only segmental arachnoiditis was found. The implications of this finding are the subject of this case report.

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