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  • Title: Internal jugular vein cannulation complications and elimination of the muscular triangle of the neck due to aberrant infrahyoid muscles.
    Author: Raikos A, Agnihotri A, Yousif S, Kordali P, Saberi M, Brand-Saberi B.
    Journal: Rom J Morphol Embryol; 2014; 55(3):997-1000. PubMed ID: 25329135.
    Abstract:
    We report on a rare case of anatomical variations of the infrahyoid muscles with prominent clinical significance. The aberrant anatomy was on the right side of the neck and involved the omohyoid and sternohyoid muscles. The superior belly of the omohyoid was duplicated in width due to an aberrant belly anteriorly and merged with fibers of the inferior belly inferiorly and the sternohyoid muscle medially. An additional aberrant muscle slip extended between the inferior third of the sternohyoid muscle and united with the inferior belly of the omohyoid. The intermediate tendon between the two bellies of the omohyoid was absent, whereas the so-called muscular triangle of the neck was diminished. Due to the arrangement and fusion of myofibers the muscle could be termed as omo-sternohyoid muscle. A profound hematoma was noted in the aberrant muscle at the area overlying the internal jugular vein indicating difficulty in obtaining jugular venous access for catheter placement. Clinicians and surgeons should be aware of muscular anatomic variations when intervening in the lateral neck area as the classical anatomical landmarks might be misinterpreted and confuse.
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