sunburst appearance

Imaging A descriptor for the appearance of a layered periosteal reaction, result of tumour extension, mineralization (sclerosis), and formation of dense filiform periosteal spicules in the surrounding tissue perpendicular to the periosteum, classically seen in bone infiltration by typical and parosteal osteosarcomas, as these usually evoke a minimal periosteal reaction. These changes are not pathognomonic and may also be seen in Ewing sarcoma
‘Sunburst’ also refers to irradiating spiculation of the ileal bone around the acetabulum in Voorhoeve syndrome—osteopathia striata
Ophthalmology See Black sunburst pattern

sunburst appearance, effect

calcified streaks which appear on radiographs to radiate from a primary lesion at the surface of a bone. One possible feature of osteogenic sarcoma but can also occur in cases of osteomyelitis.
References in periodicals archive ?
Radiological appearances manifest as mixed radiolucent/radiopaque lesion, periodontal ligament widening, radiopaque masses with moth eaten appearance, codman triangle and sunburst appearance.
3) On radiographic imaging the tumor may be osteolytic or osteoblastic, and a sunburst appearance is seen in 30% to 55% of cases.
We love the softly bevelled edges and the contained sunburst appearance.