From the case:
Rib hemangioma
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Expansile, spiculated, mass with lucencies and cortical thinning but no destruction.
Case Discussion
6–10% of primary bone tumors occur in the ribs and approximately half of them are malignant.
Hemangiomas make up 1% of all bone tumors and most often involve the skull or the vertebrae.
Ribs hemangiomas account for 0.018% of all bone tumors.