患者　男,61岁。无诱因右侧胸腰部隐痛1周,无咳嗽、咳痰、咯血及发热。1月前曾做右肾结石B超碎石术,后无明显不适。体检:一般情况好,胸廓对称,胸部无红肿及静脉怒张,肤色正常,无压痛。血常规正常。胸部X线表现:右肺下野见9.0cm×10 .0cm类圆形块影,边缘清楚,光滑,密度均匀,肿块 Male patient, 61 years old. No incentive on the right thoracolumbar pain 1 week, no cough, sputum, hemoptysis and fever. A month ago had a right kidney stones B-lithotripsy, no obvious discomfort. Physical examination: the general situation is good, symmetrical thorax, chest swelling and venous tension, normal color, no tenderness. Normal blood. Chest X-ray performance: see the right lung field to see 9.0cm × 10 .0cm class round block shadow, clear edge, smooth, uniform density, mass