Figure 2. Term cUS of two preterm born infants; parasagittal views (A) following diffuse WM injury without prior GMH-IVH, referred to as ex-vacuo VM, and (B) following a GMH-IVH grade II and subsequent PHVD requiring intervention.

Note the posterior dilatation and irregular ventricular margins in (A), in contrast to the more global ventricular enlargement in (B).