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The cochlear aqueduct: structural considerations.

G Kelemen, A Denia La Fuente, F Perez Olivares

    The Laryngoscope
    |April 1, 1979
    PubMed
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    The temporal bone's aqueduct exhibits a spindle shape with middle section dilatations. This anatomical variation facilitates the development of bony growths, potentially obstructing the aqueduct's passage.

    Area of Science:

    • Anatomy
    • Otolaryngology
    • Pathology

    Background:

    • The temporal bone contains critical structures for hearing and balance.
    • The endolymphatic aqueduct plays a role in inner ear fluid regulation.
    • Anatomical variations can predispose to pathological conditions.

    Purpose of the Study:

    • To describe the morphology of the endolymphatic aqueduct in temporal bone sections.
    • To investigate the potential for bony growths within the aqueduct.
    • To understand the implications for aqueductal patency.

    Main Methods:

    • Histological examination of 170 human temporal bone sections.
    • Detailed analysis of the endolymphatic aqueduct's shape and dimensions.
    • Identification and characterization of any bony excrescences.

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    Main Results:

    • The endolymphatic aqueduct frequently displayed a spindle-shaped morphology.
    • Numerous dilatations were observed in the middle section of the aqueduct.
    • Significant space was available for the development of exostotic depositions and osteoma-like protrusions.

    Conclusions:

    • The spindle shape and dilatations of the endolymphatic aqueduct create an environment conducive to bony proliferation.
    • These bony growths can significantly impede free passage through the aqueduct.
    • Understanding this anatomy is crucial for diagnosing and managing related pathologies.