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FIG 3. Transverse sonogram of a uniformly echogenic, pseudosolid appearance of a TDC (large arrows). Note, however, the posterior enhancement (small arrows), suggesting its cystic nature.
FIG 4. Longitudinal sonogram of a TDC shows a mixed echo pattern with internal debris (arrowhead) and septa (solid arrows). Note its relationship to the hyoid bone (H) and the intense posterior enhancement. Open arrow indicates the head end of the patient.
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