任某，男，2岁，咳嗽气短半个月，胸部X线片诊断左侧气胸，经胸腔闭式引流近1个月不愈，1997年11月3日开胸探查，见一囊性肿物呈蒂状附着于左肺下叶前内基底段上方之肺表面，直径约7cm大小，已破裂，囊壁厚薄不均，约0．5cm－1．5cm，有大小不等之灰白色硬结节，囊内基底部呈分 Ren Mou, male, 2 years old, coughing for shortness of breath and half a month, chest x-ray diagnosis of left pneumothorax, closed drainage in thoracic cavity for nearly 1 month, open chest exploration on November 3, 1997, see a cystic swollen The pedicle was attached to the lung surface above the anterior inner basal segment of the left lower lobe. It was about 7 cm in diameter and had been ruptured. The wall of the capsule was uneven and about 0.5 cm to 1.5 cm. There were gray indurations of different sizes. Section, intra-capsule basement score