A bilateral primary yolk sac tumor of the lung-associated with chromosome 3 polysomy-understanding the Oct3/4 and Sox 2 interaction

摘要

A 48-y-old woman with a past medical history significant for asthma and hypertension of 1 y duration was admitted to our hospital with a dry cough and occasional hemoptysis, which she had been experiencing for 3 mo before admission. There is a 35 pack/year history of cigarette smoking. On admission, the chest radiograph demonstrated a large soft tissue mass within the right upper lobe measuring 8x6 cm with additional soft tissue density measuring 4x2 cm along the right paratracheal region and a large soft tissue mass along the left lower lobe measuring 12 x 10 cm.