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An elliptical intermuscular homogeneous hypodense mass with few thin non-enhancing internal septa seen at the left lower posterolateral aspect of the neck between the trapezius muscle posteriorly, levator scapulae muscle anterolaterally and deep cervical (paraspinal) muscles medially. It measures about 2.5 x 5 x 5 cm in AP x TR x CC respectively and about -96 HU in density.