Infant who has been abused

Radiograph of growing skull fracture / leptomeningeal cyst
Initial lateral radiograph of the skull (above) shows a stellate skull fracture in the parietal bone. Some of the skull fragments are also diastatic, or spread apart. Followup lateral radiograph of the skull obtained 3 weeks later (below) shows a widening distance between several of the skull fragments.

The diagnosis was growing skull fracture, also known as a leptomeningeal cyst.