X ray of skull showing which lesions in brain :

Paget diseaseof the bone is a common, chronic bone disorder characterised by excessive abnormal bone remodelling. It frequently affects the pelvis, spine, skull and proximal long bones and has characteristic radiographic features. Radiographic features The early phase features osteolytic (lucent) region which is later followed by coarsened trabeculae and bony enlargement. Sclerotic changes occur much later in the disease process. * osteoporosis circumscripta: large, well-defined lytic lesion * cotton wool appearance: mixed lytic and sclerotic lesions of the skull * diploic widening: both inner and outer calvarial tables are involved, with the former usually more extensively affected * Tam o&;Shanter sign: frontal bone enlargement, with the appearance of the skull falling over the facial bones, like a Tam o&; Shanter hat. REF : DAVID SUTTON 7TH ED