Imaging of the pediatric thymus: Clinicoradiologic approach

Figure 6 Normal variation in the appearance of the thymus with age. Frontal radiographs and CECT axial images at ages of (A, B) 2 mo, (C, D) 7 years and (E, F) 12 years. Note that the initial prominent bilobed thymus in a neonate assumes a quadrilateral shape with convex margins in early childhood. Gradually it assumes a triangular configuration with straight margins. The CT density also decreases with age with fatty replacement occurring in adults.