Otic Capsule

Temporal Bone Image Library

  • Title: Microfissure, R 221
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 69
  • Gender: Male
  • Age(yrs.): 85
  • otologic_dx:

    1. Paget’s disease, temporal bone, severe, bilateral

    2. Microneuroma, multiple, in association with Paget’s disease, left

    3. Microfracture, bony labyrinth, multiple, associated with Paget’s disease, right

    4. Internal auditory canal, elongated, in Paget’s

  • Title: Round Window Microfissure, R 341
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 374
  • Gender: Male
  • Age(yrs.): 89
  • otologic_dx:

    1. Vestibular neuritis, acute, severe, bilateral

    2. Atrophy, vestibular sense organs

    3. Presbycusis, neural, bilateral

    4. Bone proliferation, lateral and posterior semicircular canals, right

    5. Malleus, fixation, congenital, bilateral

  • Title: Round Window Microfissure, R 341
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 374
  • Gender: Male
  • Age(yrs.): 89
  • otologic_dx:

    1. Vestibular neuritis, acute, severe, bilateral

    2. Atrophy, vestibular sense organs

    3. Presbycusis, neural, bilateral

    4. Bone proliferation, lateral and posterior semicircular canals, right

    5. Malleus, fixation, congenital, bilateral

  • Title: Microfissure, R 120
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • Title: Fissula ante fenestram, L-181
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 145
  • Gender: Female
  • otologic_dx:

    1. Temporal bone, newborn, normal, left

    2. Membranous labyrinth, normal, left

    3. Bony labyrinth, normal, left

    4. Hemorrhage, recent, perilymphatic space, cochlear and vestibular labyrinths, left

    5. Styloid eminence, normal, left

    6. Tympanomeningeal (Hyrtl

  • Title: Cochlear aqueduct, L-341
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 633
  • Gender: Male
  • otologic_dx:

    Normal temporal bones

  • Title: Cochlear aqueduct, R-332
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 923
  • Comments: Wide and patent cochlear aqueduct in 72 yr old man
  • Gender: Male
  • Age(yrs.): 72
  • otologic_dx:

    Clinical:

    1. Sensorineural hearing loss, high frequency, bilateral, consistent with presbycusis

    Histopathological:

    1. Loss of outer and inner hair cells, lower basal turn, ~ 0-10 mm region, right greater than left, consistent with sensory presbycusis.

  • Title: Cochlear aqueduct, R-332
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 923
  • Comments: Wide and patent cochlear aqueduct in 72 yr old man
  • Gender: Male
  • Age(yrs.): 72
  • otologic_dx:

    Clinical:

    1. Sensorineural hearing loss, high frequency, bilateral, consistent with presbycusis

    Histopathological:

    1. Loss of outer and inner hair cells, lower basal turn, ~ 0-10 mm region, right greater than left, consistent with sensory presbycusis.

  • Title: Cochlear aqueduct, L 381
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 55
  • Gender: Male
  • Age(yrs.): 63
  • otologic_dx:

    1. Otosclerosis, stapes fixation, unilateral, right

    2. Artifact, preparation, compression, moderate, bilateral

    3. Artifact, preparation, lateral ampulla and utricle, left

    4. Facial nerve, dehiscence, mastoid segments, anatomic variant, bilateral

  • Title: Cochlear aqueduct, R 324
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • Comments: Cochlear aqueduct filled with connective tissue
  • Title: Long Internal Auditory Canal, R 211
  • Chapter: Anatomy
  • Chapter section: Otic Capsule
  • TB Case Number: 558
  • Gender: Female
  • Age(yrs.): 90
  • otologic_dx:

    1. Sensorineural hearing loss, bilateral

    2. Degeneration of the stria vascularis and spiral ligament, bilateral

    3. Cochlear neuronal degeneration, partial, bilateral

    4. Partial loss of outer hair cells and total absence of Corti’s organ in the extreme b