years after initial percutaneous transhepatic cholangiography during a routine percutaneous biliary drainage catheter change showed the contrast-opacified periampullary duodenal diverticulum, which had markedly decreased in size and had no filling defect (Fig 3).

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A 68-year-old woman presented with weight loss of 7 kg over two years. Colonoscopy and gastroscopy findings were normal. Clinical examination revealed no specific abnormality and the patient was otherwise asymptomatic.Chest radiography (Fig. 1) was performed and showed an abnormality. Contrast-enhanced computed tomography (CT) of the chest (Fig. 2) was performed for further evaluation. What do these images show? What is the diagnosis?

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