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
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Left maxillary antrum showed expansile, ill-defined, mixed, radiopaque-radiolucent lesion, invading the cortical bone and adjacent soft tissues resulting in a "sunburst appearance" of periosteum.
The conventional radiograph revealed a typical sunburst appearance (figure 3).
(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.
(4) This sunburst appearance of the sulci provides an irregular radial projection instead of the normal longitudinal course of the sulci recognized in the standard midline sagittal plane.