Imaging of the pediatric thymus: Clinicoradiologic approach

Figure 11 A 16-year-old male patient with myasthenia gravis. CECT axial (A) and sagittal (B) sections showing mild diffuse symmetric enlargement of the thymus gland with a smooth contour (arrow in A and B). Sagittal T1WI (C) and T2WI (D) of the chest show that the thymus (arrow in C and D) is of homogenous signal intensity (isointense to skeletal muscle on T1WI and hyperintense on T2WI). Axial T1WI show a decrease in signal on opposed-phase image (F) when compared with in-phase image (E). The findings are consistent with thymic hyperplasia.