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Click 77-year-old male with colonic adenocarcinoma metastatic to the chest wall. Five months prior to admission non-enhanced 5 mm axial CT images (window level 40, window width 300, 130 kV, DLP 1212, Siemens Biograph 6) through the lower thorax demonstrates a soft tissue density mass lesion with associated destruction of the left anterior 7th rib highly suspicious for a metastatic lesion given the history of colon cancer. The lesion`s mean attenuation is 33.6 HU with standard deviation 63.9.

Click 77-year-old male with colonic adenocarcinoma metastatic to the chest wall. Coronal PET image corresponding to Fig. 2 Preview this figure demonstrates a focus of high FDG uptake projecting in the lateral left basilar region, within known left basilar chest wall mass consistent with metastatic disease. Maximum SUV was 1.9.

Click 77-year-old male with colonic adenocarcinoma metastatic to the chest wall. Fused PET/CT image corresponding to Fig. 2 Preview this figure confirms location and exophytic morphology of a left lower chest wall mass with maximum SUV of 1.9.

Click 77-year-old male with colonic adenocarcinoma metastatic to the chest wall. Third day of admission non-contrast axial 5 mm CT image (window level 40, window width 400, 120 kV, DLP 477, Siemens Sensation 40) of the lower chest shows an exuberate large lobulated soft tissue density chest wall mass with evidence of rib destruction anteriorly. Minimal left pleural fluid layers dependently. Average attenuation is 38.3 HU, with standard deviation = 24.4, consistent with acute bleeding.

Click 77-year-old male with colonic adenocarcinoma metastatic to the chest wall. Eleventh day of admission high resolution axial CT image (window level 400, window width 350, 120 kV, DLP 614, Siemens Definition AS+) following administration of intravenous contrast and drainage procedure shows marked decrease in size of the chest wall mass with a residual soft tissue density mass centered about the left anterior 7th rib, evidence of rib destruction and subcutaneous emphysema. The lesion`s mean attenuation is 28.8 HU with standard deviation 131.6.