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Sublingual Space
Surjith Vattoth, MD, FRCR; H. Ric Harnsberger, MD
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TERMINOLOGY

  • Abbreviations

    • Sublingual space (SLS)
  • Definitions

    • SLS: Paired submucosal, nonfascial-lined spaces of oral cavity between floor of mouth (FOM) mucosa and mylohyoid muscular sling; separated by extrinsic tongue muscles in midline
    • FOM
      • Definition is not universally agreed upon and may depend on context
      • Some authors regard FOM as inferior recess of oral cavity, beneath oral tongue, limited to squamous epithelial mucosa and amenable to visual inspection during routine clinical examination
      • Some authors regard FOM as region of oral cavity beneath oral tongue and includes mucosa as well as SLS; in many pathologic processes, there is involvement of both mucosa and underlying submucosal contents; in this context, many consider terms "floor of mouth" and "sublingual space" as interchangeable
      • Finally, some authors regard FOM as mylohyoid muscle itself, in so far as muscle creates boundary between oral cavity and SMS

IMAGING ANATOMY

  • Overview

    • Anatomy Relationships

      • Internal Contents

        ANATOMY IMAGING ISSUES

        • Imaging Recommendations

          • Imaging Pitfalls

            • Imaging Issues Related to Malignancy

              Related Anatomy
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              Related Differential Diagnoses
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              References
              Tables

              Tables

              TERMINOLOGY

              • Abbreviations

                • Sublingual space (SLS)
              • Definitions

                • SLS: Paired submucosal, nonfascial-lined spaces of oral cavity between floor of mouth (FOM) mucosa and mylohyoid muscular sling; separated by extrinsic tongue muscles in midline
                • FOM
                  • Definition is not universally agreed upon and may depend on context
                  • Some authors regard FOM as inferior recess of oral cavity, beneath oral tongue, limited to squamous epithelial mucosa and amenable to visual inspection during routine clinical examination
                  • Some authors regard FOM as region of oral cavity beneath oral tongue and includes mucosa as well as SLS; in many pathologic processes, there is involvement of both mucosa and underlying submucosal contents; in this context, many consider terms "floor of mouth" and "sublingual space" as interchangeable
                  • Finally, some authors regard FOM as mylohyoid muscle itself, in so far as muscle creates boundary between oral cavity and SMS

              IMAGING ANATOMY

              • Overview

                • Anatomy Relationships

                  • Internal Contents

                    ANATOMY IMAGING ISSUES

                    • Imaging Recommendations

                      • Imaging Pitfalls

                        • Imaging Issues Related to Malignancy