Imaging of the pediatric thymus: Clinicoradiologic approach

Figure 13 Thymic involvement by a large lymphatic malformation in a neonate diagnosed antenatally with cystic neck swelling. A: Contrast-enhanced CT scan shows a large right-sided poorly circumscribed, multiloculated low attenuation mass in the infrahyoid neck with extension into the posterior cervical and retropharyngeal space; B: Axial sections at the level of origin of arch vessels reveal involvement of the thymus (arrow) by this mass and extension into the anterior and middle mediastinum.