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  • Chronic otitis media  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 297-299 
    ISSN: 1434-4726
    Keywords: Sigmoid sinus ; Computed tomography ; Chronic otitis media ; Mastoid pneumatization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Whether or not the shape and size of the sigmoid sinus are affected by middle ear inflammation is still controversial. Using high-resolution computed tomography (CT), we examined the shape and cross-sectional area of the sigmoid sinus in 80 patients with unilateral chronic otitis media. Forty patients had right otitis media, and the others left otitis media. Whether chronic inflammation involved the right or left ear, a protrusive type of sigmoid sinus was found more frequently on the right than the left, while the cross-sectional area was significantly greater on the right. These findings suggest that a side difference affecting the sigmoid sinus would thus appear not to be caused by postnatal otitis media, but to originate in fetal life. The shape of the sigmoid sinus greatly varies among individuals and according to whether it is on the right or the left. Findings also indicate that a temporal bone CT is desirable to optimize surgical safety.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 253 (1996), S. 421-424 
    ISSN: 1434-4726
    Keywords: External auditory canal ; Sigmoid sinus ; Computed tomography ; Chronic otitis media ; Mastoid pneumatization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Using high-resolution computed tomography, we measured the cross-sectional area of mastoid air cells and the shortest distance between the external auditory canal and the anterior edge of the sigmoid sinus (DIST), and then compared the right-left difference in 70 patients with unilateral chronic otitis media and 23 cases without middle ear disease. DIST was significantly short where there was poor mastoid pneumatization (P 〈 0.0001), regardless of whether it was the right or left ear. Furthermore, on the well-pneumatized temporal bone, the increase in size of the cross-sectional area was closely correlated with the increase in DIST (r = 0.495). We suggest that the relative position of the external auditory canal and the sigmoid sinus is affected by middle ear inflammations in childhood.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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