Lung adenocarcinoma presents with diffuse bone metastasis

A 62-year-old man that smoked 15 packs a year presented to our hospital with 3-month persistent pain in the upper back. He had no cancer history, and the blood tests were unremarkable. Whole body positron emission tomography (PET) computed tomography (CT) scanning revealed a mass at the right lower lung lobe, enlargement of mediastinal lymph node, metastatic spread in the liver, and multiple bone metastasis throughout the body including the...