LAUSR

The patient was a 1-year-old girl who had been healthy since birth and who had no remarkable clinical history in the prenatal or postnatal period. She was brought to a local physician owing to fever and cough as primary symptoms. Chest radiography revealed a well circumscribed area of reduced radiolucency in the right upper lung region (Fig. 1a), and because chest computed tomography suggested the presence of a very large convex lens-like tumorous lesion measuring 80 9 41 9 72 mm (Fig. 1b,c), she was referred to our hospital. After additional examination by magnetic resonance imaging, surgical removal of the tumor was performed under a differential diagnosis, which included lipoma, lipoblastoma, teratoma, and liposarcoma. The lesion was approached under general anesthesia and differential lung ventilation in the left lateral decubitus position. The tumor had its base in the parietal pleura of the anterior chest wall near the second rib, and it had penetrated the parietal pleura and spread into the thoracic cavity. The lesion was resected sufficiently and without leaving the base unremoved or rupturing the capsule. The postoperative course was uneventful, and the patient was discharged