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Swelling of the Floor of the Mouth

      A 22-year-old man with no history of previous surgery or trauma of the oral cavity or neck presented to our Department with a 6-month history of an increasing swelling in the floor of the mouth. The patient did not report any eating or swallowing difficulties, but his elocution was mildly impaired. He had no pain or dyspnea. Physical examination revealed a large symmetrical, midline, soft, non-tender and non-pulsatile swelling of the floor of the mouth, with normal covering mucosa. There was mild displacement of the tongue superiorly and posteriorly (Figure, A). A magnetic resonance imaging scan of the head and neck was performed (Figure, B).
      Figure
      Figure(A) (Above) symmetrical sublingual swelling; (B) (Below) magnetic resonance imaging of the 6-cm well-circumscribed cystic mass.
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