Original Article:  http://www.mayoclinic.com/health/medical/IM03600
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Hot spots

Images of bone scans depicting hot spots

Scan A shows hot spots (dark areas) in both knees, a sign of arthritis in this case, and a possible fracture in the second toe of the right foot. Otherwise it shows normal bone metabolism. Scan B shows numerous bone hot spots; a result of cancer that has spread to multiple locations.
IM03600

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