Kim HK, et al. - Researchers report CT and ¹⁸F-FDG PET/CT findings of colloid adenocarcinoma of the lung in seven patients. They found that pulmonary colloid adenocarcinomas presented on CT as lobulated homogeneously low-attenuation tumors. PET revealed within tumor curvilinear or crisscross FDG uptake where tumor cells were lining the walls or septal structures. The maximum standardized uptake value of tumors on PET/CT ranged from 1.5 to 4.5 (median, 3.5). After a median follow-up period of 2.3 years (range, 2 months to 5 years), six patients were found alive without recurrence. Following 6 months of completion of the therapy, recurrent disease was detected in one patient, who was alive at follow-up 4 years after imaging and had received adjuvant concurrent chemoradiation therapy after lobectomy.