SLC2A1 and pulmonary tuberculosis: Granulomatous nodules such as inflammatory and tuberculoid nodules include a high number of inflammatory cells such as macrophages, lymphocytes, and granulocytes that are very high in glucose metabolism, the expression of Glut-1 and Glut-3 and the transfer efficiency of glucose, and a subsequent increase in the uptake of 18F-FDG.[8,11] When the obsolete pulmonary TB is in a stable condition, the TB lesions usually do not take up or take up very little of the 18F-FDG.