Fig. 3.
From: Partial response to erlotinib in a patient with imatinib-refractory sacral chordoma
18F-FDG PET/CT images of the patient three months after initiation of therapy with imatinib. MIP image (2a) shows focal increased FDG uptake in the left axillary region, lower abdominal and pelvic regions, which increased since the previous PET/CT image (1a). Transaxial CT and fused PET/CT images show increase in size and metabolic activity of the of the left axillary lymph node (2b and 2c), anterior abdominal wall lesion (2d and 2e), with interval appearance of new omental/mesenteric deposits (2e, 2g, arrows). No significant interval change was noted in the lesion near the right ischium