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Related Experiment Videos

Normal sellar variations in frontal tomograms.

P J Dubois, D P Orr, R J Hoy

    Radiology
    |April 1, 1979
    PubMed
    Summary
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    Normal sellar floor anatomy can vary, with depressions or slopes potentially mimicking abnormalities. Understanding these variations is crucial for accurate diagnosis of intrasellar lesions.

    Area of Science:

    • Radiology
    • Neuroimaging
    • Anatomy

    Background:

    • The sella turcica's anatomy is critical for diagnosing intrasellar lesions.
    • Variations in sellar floor morphology can complicate diagnostic interpretations.

    Purpose of the Study:

    • To characterize the normal anatomical variations of the sellar floor.
    • To determine the impact of anatomical variations on the diagnosis of intrasellar lesions.

    Main Methods:

    • Frontal tomograms of 100 normal sellas were analyzed.
    • Sellar floor configuration, including depressions and slopes, was assessed.

    Main Results:

    • Most sellar floors were flat or had mild depressions (<2 mm).
    • Six percent of cases showed marked central depressions, potentially altering lateral angles.

    Related Experiment Videos

  • Asymmetric sphenoid sinus septa modified sellar floor configuration in 21% of cases.
  • Normal sellar floor slopes up to 8 degrees can obscure subtle contour changes.

    • Conclusions:

    • Sellar floor anatomical variations, such as depressions and slopes, are common.
    • These variations can mimic or obscure intrasellar pathologies, complicating diagnosis.
    • Radiologists must consider normal anatomical variants to avoid misdiagnosis.