Pentavalent technetium-99m dimercaptosuccinic acid uptake in primary amyloidosis: comparison with autopsy findings

Pentavalent technetium-99m labeled dimercaptosuccinic acid (99mTc(V)-DMSA) scanning was performed on a 71-year-old woman with histologically confirmed primary amyloidosis. Definite uptake of the tracer was noted in the thyroid, liver, spleen, and kidney as well as in the heart. Three months later, she died of heart failure, and autopsy findings demonstrated diffuse deposits of AL-type amyloid in those organs that were consistent with the accumulation of 99mTc(V)-DMSA.