3/4/07

Bone Island

A bone island, also known as an enostosis, is a focus of compact bone located in cancellous bone. This is a benign entity that is usually found incidentally on imaging studies; however, the bone island may mimic a more sinister process, such as an osteoblastic metastasis.
In CT: a round nodule without extension outside the cancellous bone and does not cause bony destruction

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