Imaging study of a patient with esophageal metastases from lung cancer. a Computed tomography (CT) scan of the chest showed a 48 × 42 mm defined tumor at the ascending left lung (arrow), with a scallop-shaped contour and focal enhancement. b Gastroscopy images showed a 17.7 mm wall thickening at the distal esophagus 38 cm from the upper incisors (arrow), with the mucous epithelium being mildly hemorrhagic but without a distinct break. c Barium esophagography. Esophagography showed irregular thickening of the wall and narrowing of the lumen of the lower thoracic esophagus (arrow). d Positron emission tomography (PET)-CT. PET-CT showed multiple metastases (lower left lung, bilateral supraclavicular fossa, hilus pulmonis, mediastinum lymph node, bone).