The uptake of Gallium 67 in colonic macrophages

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Abstract
A case is presented in which a patient with a well-differentiated adenocarcinoma showed high gallium concentration in the segment with melanosis coli proximal to the obstruction. Although in this case the Gallium was associated with an increased number of faecal pigment containing macrophages it is unlikely that macrophages are the main factor in tumour uptake of Gallium compounds.