99mTc-Sn oxine complex: a radiocompound with possibilities for lymphographic studies.

A very simple method of preparation of 99mTc-Sn oxine which shows a high yield of radioactive labeling is described in this paper. After intravenous injection the radiocolloid is taken up mainly by the reticuloendothelium. The subcutaneous administration indicates a good migration through the tissues and a high accumulation by lymph nodes, characteristics which point to the usefulness of this radiocompound for lymphographic studies.