Asymmetrically increased uptake in upper extremities on (99m)Tc-MDP bone scintigraphy caused by intra-arterial injection: different uptake patterns in three cases.

Unexpected findings on bone scintigraphy such as asymmetrical uptake in extremities may cause confusion for the diagnosis. The authors describe three cases of accidental intraarterial injection of Tc-(99m) methylene diphosphonate ((99m)Tc-MDP) on the antecubital region and discuss the findings and differential diagnosis.