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Uptake of Tc-99m Di-isopropyliminodiacetic Acid by Hepatocellular Carcinoma: Concise Communication

University of the Witwatersrand, and Hillbrow
Baragwanath Hospitals, Johannesburg, South Africa

Correspondence: For reprints contact: Professor M. C. Kew, Dept. of Medicine, University of the Witwatersrand Medical School, York Road, Parktown 2193, Johannesburg, South Africa.

ABSTRACT

Uptake of Tc-99m di-isopropyliminodiacetic acid (DISIDA) by hepatocellular carcinoma was assessed in 30 patients showing obvious liver defects on a Tc-99m tin colloid image. In none of these patients was there complete "filling in" of the defects, and even partial "filling in" occurred in only 11 (36.7%). There was no uptake of Tc-99m DISIDA by the primary tumor in the remaining 19 patients (63.3%). In 19 of the 30 patients an attempt was made to correlate the degree of histologic differentiation of the tumor with the uptake of DISIDA by the tumor. No difference in uptake could be demonstrated between well, moderately, and poorly differentiated tumors. Tc-99m DISIDA was not taken up by pulmonary metastases in the only two patients tested. We conclude that imaging with Tc-99m DISIDA in conjunction with Tc-99m colloid is of no value in the specific diagnosis of hepatocellular carcinoma.