Skip header and navigation

3 records – page 1 of 1.

Epidemiology and clinical features of vestibular schwannoma in Manitoba, Canada.

https://arctichealth.org/en/permalink/ahliterature221159
Source
Can J Neurol Sci. 1993 May;20(2):126-30
Publication Type
Article
Date
May-1993
Author
A M Frohlich
G R Sutherland
Author Affiliation
Department of Surgery/Neurosurgery, University of Manitoba, Winnipeg, Canada.
Source
Can J Neurol Sci. 1993 May;20(2):126-30
Date
May-1993
Language
English
Publication Type
Article
Keywords
Adolescent
Adult
Age Factors
Aged
Audiometry, Pure-Tone
Child
Female
Humans
Male
Manitoba - epidemiology
Middle Aged
Neuroma, Acoustic - epidemiology - pathology - surgery
Retrospective Studies
Sex Factors
Abstract
The incidence of vestibular schwannoma (acoustic neuroma) in Manitoba, Canada was reviewed. From 1987 through 1991, 71 tumors were diagnosed in 69 patients. The overall annual incidence rate for both sexes was 1.27/100,000 with male and female annual incidences of 1.31/100,000 and 1.24/100,000 respectively. For males, there was an early peak in the age group 30-39 years (2.1/100,000). Following the fifth decade, the incidence for males plateaued (2.7-3.6/100,000). For females, the incidence increased with age up to age 60-69 years (4.1/100,000). This was followed by a progressive decline in the incidence. Although the incidence of vestibular schwannoma was relatively high, the clinical features were not unlike those previously reported in the literature.
PubMed ID
8334574 View in PubMed
Less detail

Investigations into the natural history of vestibular schwannomas.

https://arctichealth.org/en/permalink/ahliterature21106
Source
Clin Otolaryngol Allied Sci. 1999 Feb;24(1):13-8
Publication Type
Article
Date
Feb-1999
Author
F. Mirz
B. Jørgensen
B. Fiirgaard
E. Lundorf
C B Pedersen
Author Affiliation
Department of Otorhinolaryngology, Arhus University Hospital, Denmark.
Source
Clin Otolaryngol Allied Sci. 1999 Feb;24(1):13-8
Date
Feb-1999
Language
English
Publication Type
Article
Keywords
Denmark - epidemiology
Female
Follow-Up Studies
Humans
Magnetic Resonance Imaging
Male
Middle Aged
Neuroma, Acoustic - epidemiology - pathology - surgery
Time Factors
Tomography, X-Ray Computed
Vestibule - pathology
Abstract
In the period from 1977 to 1996 143 vestibular schwannomas were diagnosed in 138 patients in the County of Aarhus, Denmark. The natural history of vestibular schwannomas was observed in 50 patients with 52 tumours who did not undergo immediate surgical removal of their tumour due to small tumour size, advanced age, poor general health and the patients' refusal of surgery. The management included serial CT- or MR-imaging and complete otoneurological evaluation. The imaging interval was between 6 months and 2 years and depended on the recorded growth rate. Thirty-three (64%) of the tumours showed continuous growth with a mean growth rate of 1.6 mm/year. In 11 (21%) of the tumours the size was unchanged and eight (15%) remitted. The last group consisted mainly of the largest tumours. Among the tumours with positive growth, 15 (45%) had a growth rate of 1 mm/year or less. Generally, our findings showed that approximately two-thirds of all the tumours did not grow, were getting smaller or had a growth rate sufficiently small to be simply watched. Additionally, our results suggest that some symptomatic tumours will grow to a certain point whereupon stagnation or remission occurs.
PubMed ID
10196641 View in PubMed
Less detail