Value of ¹⁸F-FDG PET/CT Combined with Lung HRCT in Diagnosis of Solitary Pulmonary Intravascular Metastasis

Figure 2

A 45-year-old female with rectal cancer underwent surgery. ¹⁸F-FDG PET/CT (a1-3) scan showed an increased FDG uptake in the left lower lobe of the lung (black arrow). (SUVmax = 1.9). HRCT (a4) revealed a strip-like thickening of the corresponding pulmonary vessel. The patients received systemic antineoplastic therapy and were reexamined 3 months later. PET/CT (b1-3) and HRCT (b4) scans showed that the pathological pulmonary vessel and metabolism basically returned to normal. After 11 months, ¹⁸F-FDG PET/CT (c1-3) and HRCT (c4) found that the pulmonary vessel was markedly enlarged with increased metabolism, and new bone metastasis appeared (black triangle) (SUVmax = 3.5).